efore the BAU members head off on their next case, Kate tells her colleagues that she's pregnant, news that excites them, but adds some difficulty in her home life specifically with thirteen year old Meg who was already rebelling before the news. That case takes them to Madison, Wisconsin, where three women in separate incidents have been found murdered in their beds, their wrists tied with scarves to the bed, sexually assaulted for several hours then strangled with nylon rope. The same DNA was found at each crime scene, and there was no sign of forced entry. Despite each victim having a different sexual and dating life, they were all sexting with the same person. Evidence at one of the crime scenes and the sexts indicate that the common thread between all the victims is a widely popular erotic romance novel called "Bare Reflections", which details a story of consensual BDSM between a couple. The unsub, who they believe is married, and his victims are recreating the sex in the book, before the unsub's own fantasies of murder by erotic-asphyxiation take over. Widening the geographic area, they find similar cases occurring sporadically over several years, the downtimes between victims and probable stressors which provides clues as to issues specific to the unsub and his identity.

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