"Thirst" -- Doctor Donald "Ducky" Mallard (David McCallum, pictured) enjoys an intimate dinner with his new love interest Mary Courtney (Cheryl Ladd) on NCIS, Tuesday, Oct. 25 (8:00-9:00 PM ET/PT) on the CBS Television Network. Photo: Sonja Flemming/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

"Thirst" -- Doctor Donald "Ducky" Mallard (David McCallum) enjoys an intimate dinner with his new love interest Mary Courtney (Cheryl Ladd, pictured) on NCIS, Tuesday, Oct. 25 (8:00-9:00 PM ET/PT) on the CBS Television Network. Photo: Sonja Flemming/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

"Thirst" -- Doctor Donald "Ducky" Mallard (David McCallum, left) enjoys an intimate dinner with his new love interest Mary Courtney (Cheryl Ladd, right) on NCIS, Tuesday, Oct. 25 (8:00-9:00 PM ET/PT) on the CBS Television Network. Photo: Sonja Flemming/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

"Thirst" -- Special Agent Tony DiNozzo (Michael Weatherly, left), Special Agent Leroy Jethro Giibbs (Mark Harmon, center) and Special Agent Ziva David (Cote de Pablo, right) investigate the murder of Navy lieutenant who died of forced over-hydration on NCIS, Tuesday, Oct. 25 (8:00-9:00 PM ET/PT) on the CBS Television Network. Photo: Monty Brinton/CBS ©2011 CBS Broadcasting, Inc. All Rights Reserved

"Thirst" -- Special Agent Leroy Jethro Giibbs (Mark Harmon) and the NCIS team investigate the murder of Navy lieutenant who died of forced over-hydration on NCIS, Tuesday, Oct. 25 (8:00-9:00 PM ET/PT) on the CBS Television Network. Photo: Monty Brinton/CBS ©2011 CBS Broadcasting, Inc. All Rights Reserved

"Thirst" -- Doctor Donald "Ducky" Mallard (David McCallum) enjoys an intimate dinner with his new love interest Mary Courtney (Cheryl Ladd, pictured) on NCIS, Tuesday, Oct. 25 (8:00-9:00 PM ET/PT) on the CBS Television Network. Photo: Sonja Flemming/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved