Revealing mistake: Season 4, episode 21: "Dead Air". At the start, when Horatio looks at the call details, it very clearly reads "no sim card inserted" at the top of the screen. Quite hard for the accidental recipient of the call to have a working phone without a sim card...

CSI: Miami (2002)
1 mistake in Dead Air
Lt. Horatio Caine: You're evil, you enjoy death, and I hope you enjoy your own.
More trivia for CSI: Miami
Question: How did they locate David Penrod the second time?
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Answer: Earlier in the episode, Horatio tells Mac that Penrod was seen in Tribeca getting his leg set, only to bolt when he learned a nurse wised up the cops. Caine and the NYPD probably got Penrod's address from the hospital.
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