|First appearance||"Gray Matter" (episode 4.05)|
|Last appearance||"A Word to the Wise" (episode 4.06)|
|Reason/Cause||Murdered by Ryan O'Reily|
|Date of Conviction||March 25, 2000|
|Date of Death||August 16, 2000|
|Episode Count||2 Episodes|
|Portrayed by||Dylan Chalfy|
Plot Summary Edit
Season 4 Edit
Convicted after raping Gloria Nathan, Keenan goes to Unit B. Timmy Kirk introduces him to O'Reily. Keenan says he raped Doctor Nathan just for fun. After many fights with Keenan, Henry Stanton is put into Protective Custody with Cyril O'Reily. At Unit B, Keenan keeps fighting, this time with Biker Jaz Hoyt.
In the gym, O'Reily asked Keenan to tell about Doctor Nathan's rape. While Keenan was talking, O'Reily, using gloves to not leave evidence, took a weight and hits Keenan's head several times, until he died, unaware that Muslim inmate Zahir Arif watched the scene hidden.
Season 5 Edit
Guilty, Zahir Arif tells Kareem Said the truth about Keenan's death. They talk to Glynn, but, as no one has any evidence, the case is closed. Stanton is released from solitary and asks O'Reily who lied to Glynn about Keenan's death. O'Reily tells Stanton that Montgomery did it. Angry, Stanton gets a pencil and stabs Montgomery in the neck. Montgomery is sent to Benchley Memorial and becomes unable to talk. Then, O'Reily sends Keenan's necklace to Doctor Nathan.
Season 4, Part I