that is, when joan shannon told detectives that she and her now dead husband, major david shannon, wereegular and enthusiastic swingers. when joan told them she developed a one on one thing with a married man named jeffrey wilson, now that was a real lead. could it be the major was a victim of a jealous lover? detective murphy paid a call on wilson, also a soldier here at fort bragg. >> jeffrey did confirm he was involved in romantic relationship with joan shannon. >> where was he when this murder occurred? >> he was actually working at the time with a homicide. >> a little checking revealed it was a perfect, unasailable alibi. jeffrey wilson was innocent of murder, that is. but as for a three month affair with joan, wilson was very cooperative. he revealed every lurid detail. >> back in april they were probably meeting for sex about two times a week. in july and of course the murder occurred july 23rd, at least four times a week. >> now deputy d.a. billy wis p began to flip that idea of the love triangle motive on its head. by the way jeffrey wilson was talking, seemed to west the pers