Highlights from the Third Episode of Season 9 of NCIS

­The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy lieutenant.­

Meet McGee's Grandmother!

Meet McGee's Grandmother!

The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy lieutenant. Lily Tomlin guest stars as Penelope Langston, McGee's grandmother. Pictured left to right: Lily Tomlin, Sean Murray and Michael Weatherly
Meeting Grandma

Meeting Grandma

Lily Tomlin guest stars as Penelope Langston, McGee's grandmother. Pictured left to right: Sean Murray, Lily Tomlin and Michael Weatherly
The Penelope Papers

The Penelope Papers

The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy lieutenant
McGee's Grandmother

McGee's Grandmother

The line between McGee's personal and professional life is blurred
Lily Tomlin Guest Stars

Lily Tomlin Guest Stars

Lily Tomlin guest stars as Penelope Langston, McGee's grandmother. Pictured left to right: Lily Tomlin, Sean Murray and Mark Harmon
Penelope Langston

Penelope Langston

The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy lieutenant, on NCIS. Lily Tomlin (pictured) guest stars as Penelope Langston, McGee's grandmother.
Questioning

Questioning

The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy lieutenant, on NCIS. Pictured left to right: Sam McMurray and Mark Harmon Photo: Sonja Flemming/CBS