diff --git a/src/pages/activity-feeds/PreviewPanel.tsx b/src/pages/activity-feeds/PreviewPanel.tsx
index f42322c..79e1d49 100644
--- a/src/pages/activity-feeds/PreviewPanel.tsx
+++ b/src/pages/activity-feeds/PreviewPanel.tsx
@@ -29,8 +29,15 @@ export const PreviewPanel: React.FC = () => {
     : "https://auditor-master-images.seekright.com/SeekRight/";
   const IMAGES_TEST_AUDIT_PREFIX = "https://dashboard-images.seekright.com/SeekRight/";
 
+  // Linear rectification has no master image; show the open defect's most
+  // recent detection frame (recent_image from the anomaly table) as the
+  // left-side reference instead.
+  const showingRecentImage = !!(isRectActive && anomaly.Algorithm === 'linear' && anomaly.recent_image);
+
   let masterImageSrc = '';
-  if (anomaly.Frame_Master) {
+  if (showingRecentImage) {
+    masterImageSrc = IMAGES_TEST_AUDIT_PREFIX + anomaly.recent_image;
+  } else if (anomaly.Frame_Master) {
     masterImageSrc = IMAGES_AWS_PREFIX + anomaly.Frame_Master;
   } else if (!anomaly.Frame_Master && !anomaly.Frame_Test) {
     masterImageSrc = '/assets/images/master_and_shift_image_not_available.png';
@@ -58,7 +65,7 @@ export const PreviewPanel: React.FC = () => {
           }}
         />
         <Box sx={{ bgcolor: 'rgba(255,255,255,0.05)', color: 'text.primary', textAlign: 'center', py: 0.5 }}>
-          <Typography variant="body2" sx={{ fontWeight: 'bold' }}>MASTER IMAGE</Typography>
+          <Typography variant="body2" sx={{ fontWeight: 'bold' }}>{showingRecentImage ? 'RECENT IMAGE' : 'MASTER IMAGE'}</Typography>
         </Box>
       </Box>
 
diff --git a/src/pages/audit-session/AuditSession.tsx b/src/pages/audit-session/AuditSession.tsx
index 0ad2b3c..921e357 100644
--- a/src/pages/audit-session/AuditSession.tsx
+++ b/src/pages/audit-session/AuditSession.tsx
@@ -3,6 +3,7 @@ import { Box, Typography, Button, Chip, Switch, Dialog, DialogTitle, DialogConte
 import { useNavigate, useLocation } from 'react-router-dom';
 import ArrowBackIcon from '@mui/icons-material/ArrowBack';
 import { ZoomableImage } from './ZoomableImage';
+import { TEST_IMAGE_PREFIX } from '../../constants/media';
 import SearchIcon from '@mui/icons-material/Search';
 import { activityFeedsService } from '../../api/activityFeedsService';
 import { axiosClient } from '../../api/axiosClient';
@@ -508,8 +509,15 @@ export const AuditSession: React.FC = () => {
   let latStr = 'N/A';
   let longStr = 'E/A';
 
+  // Linear rectification records have no master image; on the left, show the
+  // matching open defect's most recent detection frame (recent_image from the
+  // anomaly table, provided by the history query) as a "last seen" reference.
+  const showingRecentImage = !!(isRectActive && currentAnomaly?.Algorithm === 'linear' && currentAnomaly?.recent_image);
+
   if (currentAnomaly) {
-    if (currentAnomaly.Frame_Master) {
+    if (showingRecentImage) {
+      masterImageSrc = TEST_IMAGE_PREFIX + currentAnomaly.recent_image;
+    } else if (currentAnomaly.Frame_Master) {
       masterImageSrc = IMAGES_AWS_PREFIX + currentAnomaly.Frame_Master;
     } else if (!currentAnomaly.Frame_Master && !currentAnomaly.Frame_Test) {
       masterImageSrc = '/assets/images/master_and_shift_image_not_available.png';
@@ -1627,7 +1635,7 @@ export const AuditSession: React.FC = () => {
             {/* Previous Image Pane */}
             <Box sx={{ flex: 1, bgcolor: '#0f172a', borderRadius: 2, border: '1px solid #1e293b', overflow: 'hidden', display: 'flex', flexDirection: 'column' }}>
               <Box sx={{ px: 2, py: 1, borderBottom: '1px solid #1e293b', display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
-                <Typography sx={{ fontSize: '0.75rem', fontWeight: 'bold', color: '#94a3b8', letterSpacing: 1 }}>MASTER IMAGE</Typography>
+                <Typography sx={{ fontSize: '0.75rem', fontWeight: 'bold', color: '#94a3b8', letterSpacing: 1 }}>{showingRecentImage ? 'RECENT IMAGE' : 'MASTER IMAGE'}</Typography>
               </Box>
               <Box sx={{ flex: 1, position: 'relative', overflow: 'hidden' }}>
                 {masterImageSrc ? (
@@ -1784,15 +1792,18 @@ export const AuditSession: React.FC = () => {
           {/* Anomaly/Safe Toggle */}
           <Box>
             <Box sx={{ display: 'flex', justifyContent: 'space-between', mb: 1 }}>
-              <Typography sx={{ fontSize: '0.75rem', fontWeight: 'bold', color: '#94a3b8', letterSpacing: 1 }}>ANOMALY?</Typography>
+              <Typography sx={{ fontSize: '0.75rem', fontWeight: 'bold', color: '#94a3b8', letterSpacing: 1 }}>{isRectActive ? 'RECTIFIED?' : 'ANOMALY?'}</Typography>
               <Typography sx={{ fontSize: '0.75rem', color: '#64748b' }}>A / S</Typography>
             </Box>
             <Box sx={{ display: 'flex', gap: 1 }}>
+              {/* In rectification mode the verdict is "Rectified / Not Rectified":
+                  A (isAnomaly=true) = Rectified (green), S (isAnomaly=false) =
+                  Not Rectified (red). In audits mode it's Anomaly / Safe. */}
               <Button
                 fullWidth
                 disabled={isLocked}
                 variant={isAnomaly === true ? "contained" : "outlined"}
-                color={isAnomaly === true ? "error" : "inherit"}
+                color={isAnomaly === true ? (isRectActive ? "success" : "error") : "inherit"}
                 onClick={() => setIsAnomaly(true)}
                 sx={{
                   borderRadius: 2,
@@ -1800,17 +1811,17 @@ export const AuditSession: React.FC = () => {
                   borderColor: '#334155',
                   color: isAnomaly === true ? 'white' : '#cbd5e1',
                   transition: 'all 0.15s ease',
-                  border: activeKeyFlash === 'a' ? '2px solid #ef4444' : '1px solid #334155',
-                  boxShadow: activeKeyFlash === 'a' ? '0 0 12px #ef4444' : 'none'
+                  border: activeKeyFlash === 'a' ? `2px solid ${isRectActive ? '#22c55e' : '#ef4444'}` : '1px solid #334155',
+                  boxShadow: activeKeyFlash === 'a' ? `0 0 12px ${isRectActive ? '#22c55e' : '#ef4444'}` : 'none'
                 }}
               >
-                ⚠️ Anomaly
+                {isRectActive ? '✓ Rectified' : '⚠️ Anomaly'}
               </Button>
               <Button
                 fullWidth
                 disabled={isLocked}
                 variant={isAnomaly === false ? "contained" : "outlined"}
-                color={isAnomaly === false ? "success" : "inherit"}
+                color={isAnomaly === false ? (isRectActive ? "error" : "success") : "inherit"}
                 onClick={() => {
                   setIsAnomaly(false);
                   setSelectedCategory(null);
@@ -1822,11 +1833,11 @@ export const AuditSession: React.FC = () => {
                   borderColor: '#334155',
                   color: isAnomaly === false ? 'white' : '#cbd5e1',
                   transition: 'all 0.15s ease',
-                  border: activeKeyFlash === 's' ? '2px solid #22c55e' : '1px solid #334155',
-                  boxShadow: activeKeyFlash === 's' ? '0 0 12px #22c55e' : 'none'
+                  border: activeKeyFlash === 's' ? `2px solid ${isRectActive ? '#ef4444' : '#22c55e'}` : '1px solid #334155',
+                  boxShadow: activeKeyFlash === 's' ? `0 0 12px ${isRectActive ? '#ef4444' : '#22c55e'}` : 'none'
                 }}
               >
-                ✓ Safe
+                {isRectActive ? '⚠️ Not Rectified' : '✓ Safe'}
               </Button>
             </Box>
           </Box>
@@ -2118,11 +2129,11 @@ export const AuditSession: React.FC = () => {
           <>
             <Box>
               <Chip label="A" size="small" sx={{ height: 20, fontSize: '0.65rem', bgcolor: '#1e293b', color: '#cbd5e1' }} />
-              <Typography sx={{ fontSize: '0.75rem', color: '#94a3b8' }}>Anomaly</Typography>
+              <Typography sx={{ fontSize: '0.75rem', color: '#94a3b8' }}>{isRectActive ? 'Rectified' : 'Anomaly'}</Typography>
             </Box>
             <Box>
               <Chip label="S" size="small" sx={{ height: 20, fontSize: '0.65rem', bgcolor: '#1e293b', color: '#cbd5e1' }} />
-              <Typography sx={{ fontSize: '0.75rem', color: '#94a3b8' }}>Safe</Typography>
+              <Typography sx={{ fontSize: '0.75rem', color: '#94a3b8' }}>{isRectActive ? 'Not Rectified' : 'Safe'}</Typography>
             </Box>
             <Box>
               <Chip label={isRectActive ? "1-2" : "0-9"} size="small" sx={{ height: 20, fontSize: '0.65rem', bgcolor: '#1e293b', color: '#cbd5e1' }} />
@@ -2363,20 +2374,20 @@ export const AuditSession: React.FC = () => {
             <Button
               fullWidth
               variant={aaIsAnomaly ? 'contained' : 'outlined'}
-              color={aaIsAnomaly ? 'error' : 'inherit'}
+              color={aaIsAnomaly ? (isRectActive ? 'success' : 'error') : 'inherit'}
               onClick={() => { setAaIsAnomaly(true); setAaCategory(null); setAaPlantSub(null); setAaNotAnAnomalySub(null); }}
               sx={{ borderRadius: 2, textTransform: 'none', borderColor: '#334155', color: aaIsAnomaly ? 'white' : '#cbd5e1' }}
             >
-              ⚠️ Anomaly
+              {isRectActive ? '✓ Rectified' : '⚠️ Anomaly'}
             </Button>
             <Button
               fullWidth
               variant={!aaIsAnomaly ? 'contained' : 'outlined'}
-              color={!aaIsAnomaly ? 'success' : 'inherit'}
+              color={!aaIsAnomaly ? (isRectActive ? 'error' : 'success') : 'inherit'}
               onClick={() => { setAaIsAnomaly(false); setAaCategory(null); setAaPlantSub(null); setAaNotAnAnomalySub(null); }}
               sx={{ borderRadius: 2, textTransform: 'none', borderColor: '#334155', color: !aaIsAnomaly ? 'white' : '#cbd5e1' }}
             >
-              ✓ Safe
+              {isRectActive ? '⚠️ Not Rectified' : '✓ Safe'}
             </Button>
           </Box>