Anything like Arsenic and Old Lace?

Hi Everyone! Just as the title says , any books like the 1944 Carey Grant movie.

Its about two old ladies that murder widowed men and are very aloof about it. They have a nephew that thinks hes Theodore Roosevelt and when travels often to "the panama canal" which is their basement. Its like a crime comedy. Highly reccomend watching it. Just the right amount of suspense and spook with some charm but not goofy.

Anyways anything that fits that kind of idk homicidal old people that are endearing vibe. 😅

Thanks!!