Dr. Alan Deaton+Season 4
[[4x02-117|117]]
Deaton and [[Lydia Martin|Lydia]] watch a de-aged [[Young Derek Hale|Derek]] while he is unconscious. Deaton is unsure of how Derek has been transformed into a teenager again.
[[4x06-Orphaned|Orphaned]]
Deaton helps save [[Brett Talbot]] whn he is poisoned by Wolfsbane. He later saves [[Liam Dunbar|Liam]] when he is poisoned by [[Garrett]] with the same type of Wolfsbane.