>> it was an accident waiting to happen, the same one tom had described seeing. but what about tom's three different stories? newmanen brought in a psychologist to explain they were all true. tom was telling it as he recalled it, piece by piece. it's a classic symptom of post-traumatic stress. >> in your opinion, did mr. richardson suffer from a traumatic event that would qualify under acute stress reaction? >> according to the records i have reviewed, yes. >> why did tom tell three different stories to police? >> he just saw the most traumatic, horrifying event of his life. he blocked it out. he could remember everything leading up to it. he could remember everything following, but he could not remember the trauma of seeing his wife go over the cliff. >> but "i can't remember" is different from what tom told police. >> he tried to tell the police exactly what happened to the best his brain would allow him to do. >> as for tom's second story that juanita committed suicide,