after spending five weeks in icu lydia tillman was transferred to a local rehab hospital. slow recovery began. >> hi, lydia. >> i showed her a video of my kids saying hello to her because they missed their aunt lydia. >> i want you to get better soon. >> and she got to the part where my 4-year-old started to talk. and she laughed and said "hi, lydia." >> hi, lydia. >> it was the first time i got to see her laugh, and i went, she's got memory, she can laugh. >> reporter: but detective gurule's murder case against travis forbes and his search for kenia monge had both stalled, nearly five months after kenia vanished and still no sign of her. but one day he got a call from the crime lab, requesting another dna sample of travis for the fbi. >> i drove up there to get his dna. i walked in, laid down my recorder. he didn't want to talk to any of the detectives, in fort collins, anywhere. but he always talked to me. >> what's up, nash? why are you here? >> i am here because i have a warrant for you. >> reporter: for the next two hours, like a couple of old college chums, the two sh