>> reporter: 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? >> reporter: 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. >> reporter: and here we are. [ laughter ] >> here we are. >> reporter: 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 nunez?