It happened one knife

"Elliot Freed is beyond happy when legendary comics Lillis & Townes appear at his refurbished all-comedy theatre. But when insinuations arise that the duo were involved in a decades-old Hollywood murder, Elliot sets out to prove the rumours wrong."@en
"Elliot Freed's film theatre is newly refurbished, things with his ex-wife are looking up, & he's hosting a special showing of a classic comedy film. But then it's suggested that one of his heroes may have been involved in a murder decades earlier."
"Elliot Freed owns an old-time movie theater and shows a classic comedy followed by a contemporary one every night. When he gets a chance to meet his comedy idols, the team of Harry Lillis and Les Townes, now in their eighties, he jumps at it⁰́₄and maybe he shouldn't. The two men are still harboring grudges from a half-century ago, and include Elliot in their intrigues. Then one of them murders the other, and Elliot has to wonder if he helped cause the death of one of his heroes.The second Comedy Tonight mystery blends laughs and intrigue, but with heart. Bestselling author Lee Child said the series is "Funny? Of course⁰́₄but also wise, suspenseful, and a genuine pleasure to read.""@en
"Elliot Freed, owner of an all-comedy movie theatre, sets out to discover the truth when insinuations arise that one of his boyhood heroes may have been involved in a Hollywood murder decades earlier."