Katie Holmes makes her debut on "How I Met Your Mother" on Halloween night as Naomi the "slutty pumpkin."
The "slutty pumpkin" character was first mentioned on the series' first season in 2005 but never revealed.
The previously mentioned pumpkin hooked up with the series lead character, Ted Mosby (played by Josh Radnor), in 2001, prior to when the episode took place. Ted liked the girl but apparently lost her number, so he waited at the same Halloween party every year dressed in the same costume -- a hanging chad (a reference to the 2000 Presidential election) -- hoping the "slutty pumpkin" would return. At the end of the episode, Ted finally gave up his search for the elusive pumpkin.
In a sneak peak video of Monday's episode, Ted finally reunites with the pumpkin. He introduces her to Barney Stinson (played by Neil Patrick Harris) and Robin Scherbatsky (played by Cobie Smulders).
Holmes' character then says, "I'm gonna go make some tootsie rolls. It's a drink I invented. There's a song and dance that goes along with it, but I have to drink three of them before I can do it."
After she leaves, Barney says, "Sounds delicious in theory, but you never know until you taste it. Ted, have you tasted her tootsie roll?"
The episode airs on CBS Monday night at 8 p.m. ET. Watch a preview clip below.