Cathryn de Prume

Derek and the attendings go out to celebrate when he gets the grant he needs for his clinical trial; Meredith and Alex must fend for themselves during the night shift.

Angus utilises his background in psychology when a woman cannot remember how she injured herself and others; Christa bonds with the mother of a patient with cystic fibrosis.

A ten-year-old cold case is reopened after a boy is hypnotised for PTSD treatment and finds he witnessed the murder.

While examining a young boy, Pratt finds a suspicious gash across his chest and calls Wendell for a consultation. Elsewhere, Kovac and Pratt examine a man who was shot when he confronted his boss with a gun, and Jake tries to convince Abby to date him despite his being a student.

After another late night out, Clark arrives late at a crime scene, wearing the same clothes he wore the day before. Sipowicz comments that his new lifestyle doesn't suit him.