Other mistake: In the flashbacks of the crime, the surviving toddler continually walks through the blood, making perfect little 'blood footprints' all over the house, and a trail leading into the back yard. Accompanying him walking around is a sound effect implying that the feet in the toddler's footed pj's are made of cloth...acting like a sponge...unfortunately, not only would the footprints not be perfect and long lasting, but the pj feet were plastic.
Other mistake: In the final scene, Belle says "Thank you" to Horatio, but the DVD subtitles say "I like you". (Region 2 UK DVD).
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.
Cubs Fan ★