Beth (Gretchen Corbett) asks Jim (James Garner) a favor on behalf of her current client (and her onetime college rival) Susan Kenniston (Margaret Impert). Jim is to check up on Richard Lessing (a pre-Dallas Larry Hagman) the principal investor in a suspicious-looking undersea research project in which Susan is involved. When murder rears its ugly head, both Jim and Susan find themselves in the direst of dire peril. This is the episode in which Jim's girlfriend Beth makes a crucial career decision which not only changes her life but also precipitates the exit of series regular Gretchen Corbett. ~ Hal Erickson, Rovi