Cops: We Can't Solve Susan Powell Case Release new details, including husband's alleged affair By Newser Editors and Wire Services Posted May 21, 2013 4:08 PM CDT 4 comments Comments This undated photo released by the West Valley City Police Department shows Susan Powell. (AP Photo/Rick Bowmer) (Newser) – Josh Powell reportedly had an affair just months before his wife disappeared, and his brother may have been "heavily involved" in getting rid of her body, Utah police revealed as they announced they couldn't solve the sensational case. The West Valley City Police Department yesterday opened its books on the investigation of Susan Powell's 2009 disappearance, after several years of second-guessing about why they never arrested her husband. Josh Powell killed himself and the couple's two young sons in an explosive house fire in Washington state last year, and his brother Michael jumped to his death from a parking garage in February. The tens of thousands of pages of documents, photographs and video, interview notes, and voice-mail messages the department released depict an investigation that focused from its earliest days on Josh Powell. Following his death—and his decision to make his brother the main beneficiary of his life insurance policy—police focused more closely on Michael Powell, whose suicide left investigators without any person of interest in the case. While authorities believe the brothers were responsible for Susan Powell's disappearance, they said repeatedly yesterday that they never had enough evidence to bring charges—an assertion that has been questioned in the past by legal experts as well as law enforcement in Washington state. Click for more of the newly-revealed information, including the woman who claims to have had an affair with Josh Powell.