own chilling tale of what happened tonight. continuing with mystery at pace in canyon, here is keith morrison. >> within days of k mortensen murder, his family found some deeply troubling reports. the investigation was leading, shores can be, detectives told them, to kay's son roger and rogers wife pam. garland said she could not believe it at first. >> i was just adamant that they could not have done it. i was their biggest defender. >> but then detectives asked her to listen to roger in pans recorded statements. and she too started to wonder. >> they told lies and it just put more suspicion on them. gradually, her conviction grew, same for k's sister, fern. >> i could by the fact that they were thinking of rodgers involvement. >> they were just too many things about roger and pam's story that didn't make any sense to fern.