they both worked at the san diego aerospace contractor back in the late 1960s. >> ended up, the threeem hanging out together all the time. >> as a result, bob brown's relationship with christine soon went beyond friendship. >> as bob put it, he thought christine was starved for affection. they have this affair that goes on for many years. when christine got pregnant and gave birth to her oldest son justin, sources told police that ken was not the boy's biological father, it was bob brown. >> robert maintained his friendship. as a matter of fact, he was justin's godfather. >> to confirm justin's paternity, investigators tracked down robert brown. >> we end up finding robert brown, he says yes, i am the father of her oldest son. we get dna testing done and confirm that he is the father of the oldest boy. >> but as justin got older and was about to go out on his own, christine decided it was time to tell him the truth. >> justin was about to graduate and christine wanted to invite his biological father to the graduation, and it was going to be sort of at the graduation that she was going