The two episodes are scheduled to air April 28 and May 5 at 8 PM ET on CBS; check local listings.
After their air dates, the episodes will be available by visiting http://www.cbs.com/primetime/ncis/video.
Barrett Foa made his Broadway debut in Mamma Mia! and later played both Rod and Princeton in the Tony-winning musical Avenue Q. The singing actor was part of the all-star Children of Eden benefit concert, and his other theatrical credits include Drunken City, Godspell, Cupid and Psyche, Much Ado About Nothing, Camelot, Kept, The Fantasticks and Gypsy. Foa is a graduate of the University of Michigan musical theatre department. His screen credits include "Six Degrees" and "Numb3rs."