In our sneak preview, Hayden Panettiere, aka Claire Bennet, in seen in the throes of a lesbian kiss with co-star Madeline Zima, who plays her room-mate Gretchen.
It will feature in the fourth season of the cult TV series, Heroes, which returned to U.S. screens last month.
Passionate: Hayden Panettiere (Claire Bennet, left) enjoys a lesbian kiss with her co-star Madeline Zima, who plays her college room-mate Gretchen in Heroes
But with falling ratings, the timing of this clip is opportune, to say the least.
This week's episode of the sci-fi programme hit a new series low for American channel NBC, pulling in just 5.14million - a drop of around 410,000 on the previous week.
Season Four is due to return to BBC2 later this year and sees indestructible cheerleader Claire start college where she shares a room with Gretchen.
Hayden revealed that the naughty girl-on-girl storyline was her idea.
Dressing to impress: The sultry scene will feature in the forthcoming fourth season of the cult show, which is set for UK screens later this year
She said: 'I kinda threw it out there. The writers put you in relationships and I was like, "Can I just be with a girl or something? Let's do that."
'So they took it and ran with it.' In the forthcoming storyline, Claire embarks on a bit of sexual experimentation with her college room-mate.
And petite blonde Hayden loved filming her lesbian lip-lock.
She said: 'She's a great girl and we have a blast.'
Ratings boost: The new series started airing in the U.S. last month but viewing figures dropped by around 410,000 for this week's episode
