it was greg faull's caretaker. d, was dead. >> we thought heart attack. >> i was thinking heart attack. i'm thinking he could've slipped and fell on a tile. >> but no. when the mccann's another expats got to greg's house, it was clear -- this was no slip and fall. >> his body was there, motionless. >> there was blood all over the floor. >> there was blood everywhere. >> police soon determined that greg faull had been killed as a single gunshot to the back of the head, execution style. there was one oddly horrifying detail -- the position of greg faull's t-shirt. >> it was pulled over like a hockey move, or something, you pull the center up over your head like that. it was all the way behind his neck. the center was pulled over. >> as he stood there, looking at his friends corpse, said shane, he was struck by the fact in spite of the obvious violence, there seems to be no sign of a robbery, or even any struggle anywhere in the house. >> just found it very odd somewhat could subdue somebody like greg, a guy that could