it was greg faull's caretaker. ght 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 and the other 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 with 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, where you pull the center up over your head like that. it was all the way behind his neck. but his shirt was still on, it was just the center was pulled over. >> as he stood there looking at his friends corpse, 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 gu