Cute Poison - S1-E4
Revealing mistake: Near the end, when Michael is unscrewing the sink before kicking the wall in, watch his hands in the foreground while he is talking to Sucre. Just when Sucre says "But what you were doing up there in the infirmary." Michael starts using his fingers to take the bolt out. You can see that there is no bolt, just him turning air, with a mystery 'unscrewing' sound effect. (00:39:35)
Cute Poison - S1-E4
Continuity mistake: When Veronica is having coffee with Nick, she picks up her cup to take a sip and is holding it around the rim. When the shot changes she is holding it by the handle. (00:29:30)
Cute Poison - S1-E4
Continuity mistake: When Nick leaves after speaking with Link he moves his briefcase to his left hand. Raises his right hand to point at Veronica and the case is back in his right hand. (00:38:10)
Cute Poison - S1-E4
Continuity mistake: Haywire picks up the one picture on the bed with his right hand then it's suddenly in his left hand. (00:32:50)
Cute Poison - S1-E4
Visible crew/equipment: When Sucre is on the phone, a boom is reflected in the phone. (00:13:30)
Answer: Because of coincidence.