Cranky Old Man is a fictional character portrayed by John O'Leary in the TV series CSI: Crime Scene Investigation.
In the first episode they appeared in, titled Irradiator (season 10), they were 83 years old.
They appear in 1 episodes out of a total of 335 aired
Episodes1
Irradiator
episode S10.E17 april 2010The team discovers that a man who shot and killed a married couple is actually a victim of "Dr. Jekyll," and Dr. Langston could be the doctor's next target.