To be honest, the police seem to have made a pig's ear out of the identification of the body by the lovely Chris, since she only looked at the tattoo. Surely, if this were a real police investigation, they would have recorded the details of the dead man's height, weight, ethnicity, hair colour, general build, moles on his skin, a body the former Mrs. Kennedy would have been very familiar with in pretty much every detail, seeing she certainly knew where the Irish-themed harp tattoo was, and it seems inconceivable that this other man would match her husband's physique in every detail.