What are the titles of the two-part fourth-season finale of House M.D.?

The two-part fourth-season finale of House M.D. is “House's Head” followed by “Wilson's Heart.”

“House's Head” begins with House suffering from a head injury and trying to reconstruct events from a night he cannot fully remember. His fragmented memory contains a clue to a medical emergency involving someone close to the hospital team.

“Wilson's Heart” resolves the mystery and focuses on the consequences for James Wilson and Amber Volakis. The paired episodes are notable because the first emphasizes House's investigation and unreliable recollection, while the second delivers the emotional and medical resolution.

The titles are sometimes confused with later finale titles. “Everybody Dies” is the series finale, and “Swan Song” is a retrospective special connected with the final season. Neither belongs to season four.