When reading most Star Trek memoirs penned by members of the original cast, you can bet on backstabbing aplenty: This was one ornery group. While Koenig, who played the cocky Ensign Chekov from 1967 to 1969, does come up with some dirt?William Shatner was a camera hog, Leonard Nimoy a cold fish?Trek fans may yearn for more Trek. Koenig devotes considerable chunks of the book to his grim childhood (he grew up in a crumbling $67.50-a-month New York flat) and his pre- and post-Chekov career crises (after Star Trek, ?the phone never rang? for years). Still, Koenig, who?s made a comeback as a mind-reading villain on the sci-fi series Babylon 5, recounts his ups and downs with objectivity and wit, making this tale of a struggling actor worthwhile.