CNN  —  When Yaani King Mondschein stepped onto the set of NBC’s “Quantum Leap” in February 2023, she had no idea it would be her last acting gig for several years. Mondschein had been called back to play “Frankie Cahill,” a recurring guest star featured in two episodes on the show. NBC filmed the episode at the Universal lot near Stage 4, on the backside of the hills where the Hollywood sign sits. The writer’s strike was looming but still hadn’t shut down most of Hollywood yet. By all accounts,