A free cupcake. A dead mailman. And a promise. When Rainey makes the offer of a free cupcake, she has no idea it will be the last one Arnold Singer will ever eat. Winter is overstaying its welcome in the small town of Sparrow, Idaho and local residents are itching for warmer weather. When a favorite mailman turns up dead near Rainey's mother's house, the town is shocked. Murder shouldn't happen to nice people, but when it does, Rainey and her boyfriend, Detective Cade Starkey, are on the case. Can they catch the killer before someone else dies?