Kate Graham believed to have a perfect marriage, but after not touching her for months her husband Duke Fairbanks, who had an affair with her friend Diana Coles, demands a divorce. She waves the prenuptial-fixed sum of nearly a million dollars, so he lets her have the house temporarily while he lives on the yacht; his corpse is found there shortly after. An unknown man who claims he killed Duke 'for her' demands 10% of his vast inheritance. When her gay friend is arrested, without bail, she asks her lawyer to defend him. The killer orders her to have dinner, shakes the Seattle PD detective Paul Tannon, proves he knows her preferences, explains how he set Jim up and doubles his tariff to 20% now she has two lives to pay off. The unknown killer is actually a tax official called Mathis...
A mix up on her first day of work sends Shane to the Dead Letter Office, where a group of quirky characters led by Oliver try to deliver the undeliverable. Though Shane wants out of this strange detail, she can't help but get caught up in the story of one misdirected letter mailed by a dying young woman to the man she was falling in love with. As circumstances around the letter get more complicated, Shane and the group break all the rules to see the letter delivered and justice done.
On a dark Christmas Eve in a small town, the lone Sheriffs on the night shift encounter a mysterious man who goes by the name of Mr. Nobody. As the night progresses, the Sheriffs discover that this isn't just a nobody, but a vengeful killer whose past threatens to haunt them all.