Dr. Ari Weiss is a fictional character portrayed by William Atherton in the TV series Castle.
In the first episode they appeared in, titled Head Case (season 4), they were 64 years old.
They appear in 1 episodes out of a total of 173 aired
Episodes1
Head Case
episode S4.E3 october 2011Gunshots, a fleeing van and a massive blood pool all point to murder, but when Castle & Beckett arrive at the crime scene, they discover that it lacks something - the victim! The investigation leads to the cutting-edge world of life-extension science, a cunning high-tech researcher, and a sleazy porn mogul who invested in a modern-day "fountain of youth." Meanwhile, Alexis finds out whether she got into Stanford.