Reacher and Neagley investigate the murder of a member of 110th, a group of Special investigators assembled by Reacher, only to realize the whole unit may be at risk.

Gideon forces Ellie to take him to the missing key, putting an old classmate’s life on the line. Nina and Bode attempt to unlock the Harlequin Chest.

When a 3-year-old arrives at the ER, the team immediately recognizes he is having a stroke. However, Dr. Shaun Murphy’s diagnosis of the underlying cause doesn’t solve the problem which…