Brenda and the team must investigate the murder of high-profile model Heather Kingsley, who dies as a result of nicotine poisoning, applied to her scalp via her hair conditioner. Suspicion quickly falls on her movie-star husband, Dean, whose philandering ways and false claims of a pre-nuptual agreement make him the likely killer. As Brenda investigates, she is drawn into the world of celebrity beauty, where illusion is everything, and the standard high. When she undergoes a make-over to meet the Dean's discarded lovers one-by-one, each of whom appears to have a motive to murder, Brenda realizes there may be more to this case than a man trying to get out of a marriage. At the same time, she is slowly seduced by the superficial glamour, which seems to impress her colleagues, and Fritz. As the real killer emerges, Brenda comes to the realization that she can only be who she is, and that the rest is just an illusion.