(Mitchell Layton/GETTY IMAGES)

Have you kept in touch with your college roommates?

Author Thomas Caplan did — and now he has one of the world’s biggest names blurbing his new spy thriller.

Bill Clinton will write a preface to Caplan’s book, “The Spy Who Jumped Off the Screen.” He showers praise on the book, calling it a “stylish, involving, utterly contemporary puzzle.”

Caplan, who now lives in Maryland, roomed with Clinton when they studied together at Georgetown University in the 1960s. He’s the author of three previous novels and is a founder of the PEN/Faulkner Award for Fiction.

“The Spy Who Jumped Off the Screen” is about a movie star, Ty Hunter, who must use his skills as a former intelligence officer to keep nuclear weapons out of the wrong hands. Viking will release the book in early 2012.

When Caplan’s last book, “Grace and Favor,” was published in 1998, Clinton was still in office. For that book he didn’t get a blurb from the sitting president, but Caplan did manage to get another big name to pat him on the back.

“A family saga reminiscent of Henry James at his best. A masterpiece,” wrote George Plimpton.