>> hindsight, i think he knew -- [sighs] probably by my body language. and just him knowin'me as well as he did, that he was losin'me. >> that night, linda felt she and tom were back on track. >> i remember comin'upstairs and he picked me up and threw me on the bed and was, like, ticklin'me. i think we both just felt like there's light at the end of this tunnel. and this is the old us. we're happy and silly and -- and we're gon -- we'll get through this, you know? >> the next morning tom was dead. and investigators were now learning details about his complicated personal life. a bit of a soap opera going on here. >> funny thing is, prior to meetin'you guys, we said this is a "dateline" case. >> and here we are. [laughter] >> here we are. >> despite what they heard from linda and gil, investigators were somewhat skeptical that this love triangle really had no jealousy or resentment. d.a. investigator bill weishaupt. >> we had to try to determine, was there some type of relationship that we weren't seeing between the victim and