>> the spot where they went is not a spot you go to reconcile with anybody. >> reporter: detectives weren't buying the story for another reason. they found something suspicious inside the car. a bag filled with items you would expect for a romantic picnic and one you would not. a hammer. >> you have wine, cheese, crackers, opener -- claw hammer. if red flags were going off, they reached the top of the pole at that point? >> reporter: did you think it was a murder weapon? >> i thought that might have been plan a. he didn't use it so he went to plan b. >> reporter: which he believed was to push or throw jody from the cliff. so detectives asked stephen the obvious. what was a hammer doing in the picnic bag? >> he said he fixed a draw in the kitchen with the hammer. he just forgot to put it back in the garage. he put it in the bag with the picnic items.