Algernon is eager to assist Sam in his cases, and Sam is willing to let him—as long as there’s no murder involved. But the embezzlement case he’s been hired to investigate for a local restaurant turns sinister when a diner gets poisoned right in front of his eyes. Sam sets out to discover whether the death was the accidental result of a plan to sabotage the restaurant or if the high-maintenance woman who got served poisonous mushrooms was the target of a plot to kill her. She does seem like the type you’d want dead. Meanwhile, Chez Celine learns Mr. Mustachio is going to be a father. Or so the high-maintenance woman claims when her prize-winning cat turns up pregnant. Algernon denies responsibility, but how to prove it? When Mr. Mustachio's habit of poking his nose in where it doesn’t belong lands him in cat jail, Sam has to ask the one man he least wants to turn to for help in saving his partner.