There's Just No Accounting... - S2-E18
Revealing mistake: After Ralph tells Bill that the kidnappers are planning to take another child, when Bigsby walks out of the Sherwin house, in the next shot just as Ralph flies off we can see the stunt's springboard between the bush and the tree. (00:31:05)
There's Just No Accounting... - S2-E18
Visible crew/equipment: At the end, when Carlisle claims he and Bill had a business lunch in June to discuss a case, Pam explains that La Maison Faire is very expensive French cuisine in Beverly Hills, and in the next shot an actor's T-mark is visible on the floor. (00:47:15)
Continuity mistake: A woman tells Bill that her blind neighbor, Judy, is still in the burning building. In the following shot, when Tanner approaches the door there's a pane of glass beside the door knob and there's a backplate behind the knob, but in the next closeup both the pane of glass and the backplate have vanished. (00:03:45)
Continuity mistake: While Ralph is searching for the missing boy and finds Johnny's baseball cap, Ralph's watch vanishes and reappears, then it happens again when he finds the boy. (00:38:20)
Continuity mistake: At the rec center, when Ralph enters the reserved racquetball court two men force him onto the floor for another polygraph. Ralph's wearing striped socks, blue shorts with white stripes, a blue half-shirt with red/white stripes that bares his midriff, but in the closeups as Ralph sits down and has the polygraph hooked up, all the stripes on his clothing have vanished and Ralph's abdomen suddenly has a significant amount of dark hair. (00:20:55)
Visible crew/equipment: After Bill and Ralph leave the restaurant to pay Prentiss Hall a visit, when it cuts to Bill slowly driving past the camera, we can see the reflections of the reflector screens, and the cameraman with the camera. (00:26:20)