[r9etb]

And, of course, no forced entry.

That's not conclusive. This house had workers in and out, and it's quite common to give keys to the contractors. If Ricci is one of the bad guys, and he had access to the keys, he could have just walked right in the front door.

That's my guess as to what actually happened.

[Carolina]

And he would have known the layout of the house.