Early in his career, what popular novelist wrote the screenplay for the 1972 movie ''The Carey Treatment'' under the alias Jeffrey Hudson?

I think that was Michael Crighton

You're correct!

''The Carey Treatment'' was based on Crichton's Edgar Award-winning mystery ''A Case of Need'' which also used the Jeffrey Hudson moniker. Crichton also wrote ''Dealing, or the Berkley-to-Boston, Forty-Brick, Lost-Bag Blues'' in 1970 with his brother, Douglas, under the pseudonym Michael Douglas, and a series of thriller novels between 1966 and 1972 as John Lange. He started his literary career writing thrillers on weekends and vacations as a means to pay for his medical school tuition.