A teaser is part of a television show that airs before the main title sequence. Designed to capture viewers' interest and keep them tuned to the program, teasers vary in style, length, and content. The Six Million Dollar Man and The Bionic Woman employed two kinds of teasers during their run: cold opens and previews. A cold open is a complete scene that serves as a prologue and usually ends in a cliffhanger hook. The preview is a quick montage of moments from the episode that encapsulates the narrative and can also end in a cliffhanger hook.