Peter Lassally, the longtime late-night producer dubbed the “host whisperer,” has died at 93, leaving a lasting imprint on The Tonight Show, Late Night with David Letterman, and The Late Late Show. He helped shape The Tonight Show’s late-night formula from 1969 through Johnny Carson’s retirement in 1992, then advised Letterman as he moved to CBS to launch The Late Show. Lassally also shepherded The Late Late Show through its early iterations, working with Tom Snyder and later Craig Ferguson, before semi-retiring as Ferguson’s tenure ended. His extraordinary life included surviving the Holocaust after being born in Hamburg and living in the Westerbork transit camp and Theresienstadt before emigrating to New York in 1947. Across his career, Lassally mentored and influenced a generation of comedians, including Garry Shandling and Jon Stewart, and played a pivotal role in linking talent with opportunities in late-night television.