Diagnosis: Murder
S04E02 Murder Can Be Contagious
A burglar accidentally contracts a lethal virus, which leads to Dr. Sloan and Jesse being exposed after Jesse finds the thief's corpse. As a result, Mark and Jesse are quarantined in Mark's house while Steve and Amanda look into the pharmaceutical company that created the virus, desperately searching for a cure before Jesse’s time runs out.
Season 4 Episodes
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Murder by Friendly Fire
Murder Can Be Contagious
Murder on Thin Ice
X Marks the Murder (1)
X Marks the Murder (2)
A Model Murder
Murder Can Be Murder
An Explosive Murder
Murder by the Busload
A Candidate for Murder
The ABC's of Murder
Murder in the Family
In Defense of Murder
A History of Murder
Murder Two (1)
Murder Two (2)
Hard-Boiled Murder
Murder, Country Style
Delusions of Murder
A Passion for Murder
Blood Brothers Murder
Physician, Murder Thyself
Murder in the Air
The Merry Widow Murder
Comedy is Murder
The Murder of Mark Sloan