At the end of last year, an extraordinary work of detective criticism briefly appeared, despite legal threats. Kent Johnson's A Question Mark Above the Sun (Punch Press) movingly speculates that Kenneth Koch forged one of Frank O'Hara's greatest poems as a posthumous tribute to his friend. A noir-ish middle also recounts some very funny run-ins with the English avant-garde. Shame on the poets who forced its redaction and suppression. - Jeremy...