until a witness comes forward with a name, dave shepherd, who soon confesses to the crime. >> he's laying on the floor, not moving, not breathing, nothing. i check his pulse in his neck. he's dead. >> reporter: he has no known connection to dr. sonar, but >> we just hit it off. >> it was an unlikely romance. dixon, a successful plastic surgeon, and shepherd, a divorced, con-man. >> he left his wife for her. you know, she broke up his marriage and he just wanted, i >> reporter: that meant getting rid of the man she loved. >> he wanted him hurt and then gradually ended up wanting him killed. >> reporter: police arrest dr. dixon for ordering the hit on dr. sonar. but who will the jury believe, a respected plastic surgeon, or a con-man? in the first trial, shepherd reneged reneged, refusing to turn against his best friend. in the end, the jury couldn't reach a verdict. the hitman's daughters takes the stand. >> we all asked him, how do you have money? and his words were, i did some work for mike and he paid me early. >> reporter: and you think that was a prepayment for killing dr. sonar? >> i
