Carrie and Al's investigation into the murder of a hard-partying heiress takes an unexpected turn when they discover that the woman apparently didn't exist until 18 months earlier. Written by
Did You Know?
, actress and star of 'Taxi (1978)', has a cameo in the book-signing scene of this episode. Henner is one of the rare individuals who have actually been diagnosed with Hyperthymesia, the condition that is the basis of the lead character's superior memory. See more
(uncredited) See more