When a whiskey magnate is found dead in a brothel, the Pinkertons go head-to-head with Sheriff Logan and learn that the truth is murkier than a barrel of Kentucky bourbon.

It's a trail of murder, mystery and revenge as Kate and Will step into an international case between America and Japan.

When a young, idealistic Civil War hero is attacked during a campaign speech, the Pinkertons are pulled into an even dirtier world than they're used to - politics.

Will and Kate uncover a mystery that hits too close to home when a fellow Pinkerton Agent is murdered, and Allan returns to Kansas City to oversee the investigation.

When a member of the Chippewa Tribe is murdered in town, Will and Kate must unlock the truth from the only witness - a 12-year-old Sioux boy who doesn't speak English - before a race war breaks out in Kansas City.

S1, Ep9

31 Jan. 2015 In Marm's Way

The Pinkertons get more than they bargained for when a peddler from New York City goes missing, and a blast from John Bell's past threatens his freedom.

Will grows jealous when an old friend of Kate's comes to town with a traveling boxing league. But when her friend is accused of murder, Kate has to choose between her feelings for the man and her duty to the Pinkertons.

Will and Kate investigate a murder involving four former Civil War nurses who are bound together by a terrible secret.

A murder coincides with the arrival of notorious Confederate General Sterling Price in Kansas City. As the Pinkertons investigate, Kate finds herself in grave danger when she comes face to face with an old enemy.

The Pinkertons tackle their first cold case after a skeleton turns up on the outskirts of Kansas City. When the search for a suspect leads them to Logan's doorstep, Will and Kate must face the possibility that the Sheriff is a killer.

Kate and Will take on a case where client and victim are one and the same, after the coach bringing their new employer to Kansas City arrives with a gruesome cargo - a trio of bodies, the victims of foul play.

Robert Pinkerton is in Kansas City to conduct Will and Kate's annual performance review. When Robert raises questions about their partnership, Will and Kate's loyalties will be tested.

A reading of an incendiary biography of famed Confederate spy Rose Greenhow includes scandalous allegations about Allan Pinkerton. When the book's publisher turns up dead, Will and Kate must find the killer - and clear Allan's good name.

Panic erupts when a mysterious sniper begins killing residents of Kansas City one by one. Will and Kate race to catch the shooter, unaware that the gunman has his sights set on the very heart of the Pinkerton Agency.