Continuity mistake: Sucre and C-Note came to Michael's help with dealing with the general. Sucre has noticeably longer hair than normal. In the next clip his hair is gone. (00:20:00 - 00:21:00)
Going Under - S4-E15
Continuity mistake: Michael is discussing a bargain with Sara but when he first draws it out it's in squares, then when the clipboard is lying flat on his stomach the letters are circled.
Continuity mistake: Episode 4x7, "Five the Hard Way": when Gretchen calls Agent Self at the end of the episode, Self's phone shifts from being in his right hand and ear to his left hand and ear.
Continuity mistake: In season 1 Lincoln says his mother died of liver cancer. In season 4 they said she died from a brain tumour.
Continuity mistake: After Sucre and the driver of Stuart's car wreck, another car pulls up behind and starts honking. Cut to a shot from behind the cars and there is a whole line of cars waiting. They weren't there in the opposite angle.
Continuity mistake: When Sara comes to visit Gretchen is a little mistake. When Sara makes a little cut in Gretchen's throat, the wound looks different sometimes, and at one point completely vanishes.
Continuity mistake: At the car dealer where Don Self speaks to the seller, the seller says "How did you find me?" and they are inside the car dealership. Don responds with "I've never lost you". Suddenly when Don answers they are outside the building, like they teleported. (00:13:25)
Answer: Don Self actually worked with Whistler before he died. And Whistler with the bird book actually knew where Scylla was.