Petrie Beach is a place where Dexter Morgan and his adoptive family had picnics when he was a child.
After The Ice Truck Killer broke into Dexter's Apartment, he looked through his family album and noticed a photo of Dexter at the beach, The Ice Truck Killer then used the area to display Tony Tucci's severed left hand. This was the first amputation, and it proved that Tucci was a victim, not The Ice Truck Killer.
Dexter to Angel: "Interesting hand job."
Angel Batista, smiling: "That's funny!"
Dexter: "It is?"
- The real filming location of Petrie Beach is in Fort Lauderdale, Florida, at the tip of the South Beach Park.