3x4 - Blue Murder

A man is found in a parking garage, beaten and amnesiac, with only a book of bird drawings to identify him. Pogue takes the book to his wife Carolyn in the hopes that she can identify the birds and narrow down where the man is from, and in exchange for her helping, Pogue ends up having to spend a great deal of time looking after their daughter Cara, much to Oosterhuis' frustration. While Weeks and Gillam focus on dealing with the patient, who has taken a shine to Gillam, they soon locate his wife, only to learn she's not the only Mrs. John Doe.