MEET ETHEL FIONA CRESTWATER—RETIRED FBI AGENT-TURNED-LANDLADY. STILL DANGEROUS AT SEVENTY-FIVE.

Ethel is almost getting too old for a secret FBI mission—almost! Her expert investigation skills are needed again when her elderly neighbor and close friend Sarah Phelps is found dead in her own dining room—with an unknown male body next to her.

It looks like Sarah's new boyfriend, the one she met on a senior dating app, killed her and then turned the gun on himself.

But Ethel doesn't buy it for a second.

The FBI traces cash that Sarah had withdrawn hours before her death. It leads to a wire-fraud operation with the fingerprints of organized crime all over it.

Ethel calls in favors from contacts on both sides of the law and goes undercover to find out who's really running the scam, before it claims another victim. This time, the mark might be her.

A witty, hilarious, and action-packed mystery novel, perfect for fans of Richard Osman, Naomi Kuttner, Robert Thorogood, and Deanna Raybourn.