I think he figured since he had gotten away with Kathleen's murder and since Stacy's own Mother disappeared - he could do away with Stacy and LE would assume she "took off". He never counted on the media hounding him and that this would make national news - I'm sure he never imagined they'd look into Kathleen's death again. I don't really know if they'll ever find Stacy's body.I agree, he has to know that first hand. He has to know that they have not been able to find enough proof to take Craig Stebic to trail, jail...ect