diff --git a/spell_rev/changelog.md b/spell_rev/changelog.md
index 892cc071..08f1fc53 100644
--- a/spell_rev/changelog.md
+++ b/spell_rev/changelog.md
@@ -53,6 +53,7 @@ The most salient ones are:
 25. [Missing projectile in Avenger's chromatic orb](https://github.com/Gibberlings3/SpellRevisions/pull/117): patch by mercurier.
 26. [Patching hidespl.2da instead of overriding](https://github.com/Gibberlings3/SpellRevisions/pull/116): as the name says; instead of overwriting `hidespl.2da` tables, patch them.
 27. [Imprisonment vs. Freedom patches](https://github.com/Gibberlings3/SpellRevisions/pull/118):
+28. [Patch inquisitor true seeing](https://github.com/Gibberlings3/SpellRevisions/pull/119):
 
 ## Earlier versions.
 
diff --git a/spell_rev/components/main_component.tpa b/spell_rev/components/main_component.tpa
index 154769f8..6f3bb6e2 100644
--- a/spell_rev/components/main_component.tpa
+++ b/spell_rev/components/main_component.tpa
@@ -3357,6 +3357,9 @@ INCLUDE ~spell_rev\lib\refinements.tph~  // refinements spells reverted back to
 //Imprisonment patches.
 INCLUDE "%MOD_FOLDER%/lib/imprisonment.tph"
 
+//True sight patches.
+INCLUDE "%MOD_FOLDER%/lib/inquisitor_true_seeing.tph"
+
 //// SECTYPE FIXES FOR VANILLA MESS and some more//
 
 INCLUDE ~spell_rev\lib\kreso_extra.tph~
diff --git a/spell_rev/lib/imprisonment.tph b/spell_rev/lib/imprisonment.tph
index 983b1107..003116e2 100644
--- a/spell_rev/lib/imprisonment.tph
+++ b/spell_rev/lib/imprisonment.tph
@@ -13,9 +13,7 @@ BUT_ONLY
 
 //Set sectype in Imprisonment.
 WITH_SCOPE BEGIN
-    OUTER_INNER_PATCH "" BEGIN
-        LPF get_spell_res STR_VAR spell = "WIZARD_IMPRISONMENT" RET res_name = resource END
-    END
+    LAF get_spell_res STR_VAR spell = "WIZARD_IMPRISONMENT" RET res_name = resource END
     
     ACTION_IF NOT ("%res_name%" STRING_EQUAL_CASE "*") BEGIN
         COPY_EXISTING ~%res_name%.spl~ ~override~
@@ -27,9 +25,7 @@ END
 
 //Patch freedom spell.
 WITH_SCOPE BEGIN
-    OUTER_INNER_PATCH "" BEGIN
-        LPF get_spell_res STR_VAR spell = "WIZARD_FREEDOM" RET res_name = resource END
-    END
+    LAF get_spell_res STR_VAR spell = "WIZARD_FREEDOM" RET res_name = resource END
 
     ACTION_IF NOT ("%res_name%" STRING_EQUAL_CASE "*") BEGIN
         COPY_EXISTING ~%res_name%.spl~ ~override~
@@ -61,18 +57,18 @@ WITH_SCOPE BEGIN
     BEGIN
         LAF get_spell_res STR_VAR spell = EVAL "%spell%" RET res_name = resource END
         ACTION_IF NOT ("%res_name%" STRING_EQUAL_CASE "*") BEGIN
-        COPY_EXISTING ~%res_name%.spl~ ~override~
-            LPF CLONE_EFFECT INT_VAR
-                check_globals = 0
-                match_opcode = 101      //Immunity to effect.
-                match_parameter2 = 213  //Maze.
-                opcode = 206            //Protection from spell.
-                parameter1 = 0          //Zero out.
-                parameter2 = 0
-            STR_VAR
-                resource = EVAL "%res_name_imp%"
-                insert = "below"
-            END
+            COPY_EXISTING ~%res_name%.spl~ ~override~
+                LPF CLONE_EFFECT INT_VAR
+                    check_globals = 0
+                    match_opcode = 101      //Immunity to effect.
+                    match_parameter2 = 213  //Maze.
+                    opcode = 206            //Protection from spell.
+                    parameter1 = 0          //Zero out.
+                    parameter2 = 0
+                STR_VAR
+                    resource = EVAL "%res_name_imp%"
+                    insert = "below"
+                END
         END ELSE BEGIN
             FAIL "imprisonment.tph: spell '%spell%' not found."
         END
diff --git a/spell_rev/lib/inquisitor_true_seeing.tph b/spell_rev/lib/inquisitor_true_seeing.tph
new file mode 100644
index 00000000..e776ba2a
--- /dev/null
+++ b/spell_rev/lib/inquisitor_true_seeing.tph
@@ -0,0 +1,45 @@
+//Libraries.
+INCLUDE "%MOD_FOLDER%/lib/utilities/utilities.tpa"
+
+//Functions.
+DEFINE_PATCH_FUNCTION patch_true_seeing_immunities STR_VAR spell = "" BEGIN
+    LPF CLONE_EFFECT INT_VAR
+        check_globals = 0
+        verbose = 1
+        match_opcode = 142      //Display icon.
+        match_parameter2 = 108  //True seeeing.
+        opcode = 206            //Protection from spell.
+        parameter1 = 0          //Zero out.
+        parameter2 = 0
+    STR_VAR
+        resource = EVAL "%spell%"
+        insert = "last"
+    END
+END
+
+//Main loop.
+WITH_SCOPE BEGIN
+    LAF get_spell_res STR_VAR spell = "INQUIS_TRUE_SIGHT" RET spell_to_patch = resource END
+    ACTION_IF ("%spell_to_patch%" STRING_EQUAL_CASE "*") BEGIN
+        FAIL "inquisitor_true_seeing.tph: spell 'INQUIS_TRUE_SIGHT' not found."
+    END
+
+    COPY_EXISTING ~%spell_to_patch%.spl~ ~override~
+        PATCH_FOR_EACH spell IN
+            "WIZARD_OBSCURING_MIST"
+            "CLERIC_OBSCURING_MIST"
+            "WIZARD_SPOOK"
+            "WIZARD_KNOW_ALIGNMENT"
+        BEGIN
+            LPF get_spell_res STR_VAR spell = EVAL "%spell%" RET res_name = resource END
+            PATCH_IF NOT ("%spell%" STRING_EQUAL_CASE "*") BEGIN
+                LPF patch_true_seeing_immunities STR_VAR spell = EVAL "%res_name%" END
+            END ELSE BEGIN
+                PATCH_FAIL "inquisitor_true_seeing.tph: spell '%spell%' not found."
+            END
+        END
+
+        //Shadow door aux spell mazing.
+        LPF patch_true_seeing_immunities STR_VAR spell = "spwi505d" END
+    BUT_ONLY
+END