rudy could have driven his car inside the garage. that's why no one saw kristine with him, maybe. >> they also discovered that several weeks after kristine disappeared, a four-inch cement slab floor was poured inside the garage. >> there's a possibility she may be buried underneath the garage. i mean, it's not definite, but there's a strong possibility. >> the pressure is really on him, police have been going to see him, he gets really nervous, he may start thinking that he might get in trouble instead of rudy. and he might decide he wants to talk. >> he did not respond to our request for an interview. gil hopes by investigating those around rudy someone will come forward. >> and that's what we're looking for, the final answer. i want somebody to call me. i know that one call is going to come in and they're going to say, listen, this is what i know and it's going to be right on the button. >> we're investigating it as a homicide case. i mean, does the chance exist that she's still alive? but that's like one in a million shot. i mean, most likely she's the