Mystery of CBS' 'Island' will deepen online

Web site will continue series' story lines

CBS will give midseason series "Harper's Island" the multiplatform treatment with an online component created by the makers of Internet sensation "lonelygirl15."

"Island," a 13-episode mystery scheduled to premiere April 9, will be complemented by, which will continue the series' story lines through separate video content and other interactive tools.

EQAL, the production company behind "lonelygirl15," has worked with CBS and "Island's" writers and producers from the beginning to map out the series' multiplatform presence. Online components to primetime programming typically are an afterthought, not considered during development.

"The multiplatform, interactive elements at expand the whole experience of our show, which I feel is beyond necessary in the world of such rapidly changing media," "Island" executive producer Jon Turteltaub said. "We have to make our show an Internet event as well as a broadcast TV event."

The CBS-EQAL collaboration is the first output of a partnership the companies struck in May with the intent of creating multiplatform programming. Executive producers at are EQAL co-founders Miles Beckett and Greg Goodfried.