"Mirror Image, Part 1 of 2"
*Identical twins -mirror image identical twins- are invited to leave a club and go to the Psycho Circus. There, they ride a carousel that increases in speed until the surroundings become a blur. When the carousel stops, one twin is missing. Each sees the other as being gone, and as they search for each other, they have the same experiences. When they are reunited, they also find a third girl lying on a marble slab who looks exactly like themselves. Later, at the club, one of the twins suddenly collapses. *Source: imagecomics.com