Continuity: In the early scene when Harry walks across the street to confront the wounded robber on the street ("Did he fire six shots or only five?"), the shotgun used by the robber is lying several feet from the robber's hand, but when he reaches the robber, the camera shot shows the shotgun just a few inches from the robber's left hand.

Continuity: During the scene on the football pitch where Callahan is torturing Scorpio to force him to say where the kidnapped girl is, there are several shots as if from Callahan's viewpoint. As the camera switches between the two characters, the white painted lines on the pitch mysteriously move or even vanish underneath Scorpio.

Continuity: The blackmail note Harry finds after the first murder is pinned to an antenna. When the note is projected at the Mayor's office there is no trace of the rather big hole in the middle.

Factual error: When Harry is confronting the bank robber and the robber says he has to know if Harry had any shots left, Harry cocks the hammer which rotates the cylinder. If you watch closely when he pulls the trigger the cylinder rotates again. This can happen only when the trigger is pulled in double action mode (hammer down).

Other: According to the big photograph in their respective offices Bressler and the DA share the same pair of little daughters.

Revealing: Near the end the psycho killer pays a black man to beat him up so that he can then blame the injuries on Dirty Harry. Watch the killer's hairdo as he gets punched and beaten: a couple of rear-view scenes show an obviously fake wig, intended to look like the killer's own bad-hair-day style.

Other: When Callahan is going to deliver the yellow bag containing the money to Scorpio, he tapes a knife to his leg with sellotape. However, later when he uses the knife to stab Scorpio in the leg, there is no sellotape on his leg.

Continuity: When Scorpio leaves the hospital after treatment of his face injuries he has a band aid over his nose and a rectangular gash on the forehead. When he kidnaps the bus the tape is higher up his nose, and after he hits the little boy it is shorter. The gash on the forehead turns triangular at the end before they crash into the gravel pit area.

Revealing: When Harry kills Scorpio with the last bullet the deadly wounded Scorpio looks back over his shoulder while he is flying into the lake to prepare for the dive.

Continuity: In the scene where Scorpio takes the fishing boy hostage the shrubs behind Scorpio keep changing. Actually, there shouldn't be any as he is standing right at the edge of the lake.

Continuity: When Scorpio falls into the lake the ripples he creates disappear within seconds, but when the camera angle changes the ripples are back and there a lots of leaves floating on the water which weren't there before.

Continuity: In the 1st killing, the distance from the rooftop to the pool is much closer than when Harry finds the empty shell casing on the roof.

Continuity: When Harry is standing in front of the cross the light comes from behind. When the camera angle changes as Scorpio walks up to him the light comes from the side.

Revealing: When Harry stops the bank robbers he gets shot in his leg. The blood on his pants is way to bright, even if it were arterial blood (but it's not, looking at the casual way he is dealing with his injury).

Continuity: When Harry asks Bressler for some scotch tape to fix the knife to his leg the tape holder turns around before Bressler picks it up.

Visible crew/equipment: When the car with the bank robbers drives off Harry shoots the driver. The car crashes in a flower stand and knocks over a hydrant. When the camera angle changes to a view from the back you see a cable coming out of the trunk.

Continuity: When Scorpio shoots the girl in the pool a red towel is spread over the backrest of the right deckchair. When the police officers are dealing with the girl's body the towel is crumpled in the seat of the chair, but when Harry looks at the pool from the other building the towel is again spread out as before.

Continuity: When the jumper jumps over to the cabin in which Harry was lifted up, Harry knocks him out, securing the man by holding his arm over the top railing. When they arrive on the ground he is holding the man's arm over the lower railing, which raises the question how and especially why he moved the unconscious man down while he was hanging outside the cabin.

Continuity: When Scorpio shoots the girl in the pool she is swimming in the middle, but in all later shots the water is only bloody at the steps where she was pulled out.

Continuity: The angle from which Scorpio shoots the girl in the swimming pool does not match the way she is hit in the shoulder.