Deep Six is a series of books written by Timothy McGee, under the pseudonym Thom E. Gemcity, in his spare time.
There are currently two books in the series:
- Deep Six: The Continuing Adventures of L.J. Tibbs, which has made him something of a minor celebrity.
- Deep Six: Rock Hollow - The Continuing Adventures of L.J. Tibbs, a work in progress.
The characters are based on the agents in McGee's squad: "L.J. Tibbs" is based on Leroy Jethro Gibbs; "Lisa" is based on Ziva David; "Tommy" is based on Anthony DiNozzo; "Amy Sutton" is based on Abigail Sciuto; "Pimmy Jalmer" is based on Jimmy Palmer; and "McGregor" is based on McGee himself with the plot lines inspired by cases the team worked on.