Prepare to learn more about Red Band Society‘s resident “scary bitch,” Nurse Jackson. Octavia Spencer has teased big reveal in season 1, episode 7!

Tonight’s episode of Red Band Society will mainly focus on the kids, who attend the Homecoming dance at Kara (Zoe Levin)’s high school.

Related: Red Band Society season 1, episode 4 sneak peek shows Kara getting ready for Homecoming

But the adult characters are getting more storylines soon. Last week Nurse Kenji (Wilson Cruz) made an offhand comment about the life Nurse Jackon gave up in order to work at the hospital, and in episode 7, we’ll explore the character’s past.

Speaking to TV Line, Octavia Spencer reveals, “We’re actually filming a big Nurse Jackson reveal [in] episode 7.”

What could that be? Was she an actress or a singer, perhaps?

Whatever it is, “she doesn’t bring her private life to work,” Spencer says. Luckily, we get to follow her home. “The hospital is a huge part of her life, but there’s a whole different part that we’re going to unveil.”

As for tonight’s episode, expect to see sparks flying between Emma (Ciara Chota) and Leo (Charlie Rowe)… and Kara?!

“True friendships are revealed,” Spencer teases. “Emma gets to go to her first dance, and it’s Kara’s homecoming, so there’ll be sparks flying there. Are they both out for Leo’s heart?”

Related: Red Band Society season 1, episode 4 stills: Emma goes to Homecoming

Meanwhile, Nurse Jackson will be butting heads with Doctor McAndrew (Dave Annable), who seems to trust Jordi (Nolan Sotillo)’s mother more than is wise.

Although she’s looking forward to exploring her character’s past, Spencer enjoys working on the ensemble drama. “I love the fact that we get to focus on these kids. Every character has his or her episode, where their storyline comes to the foreground,” she says.

Red Band Society season 1, episode 4, “There’s No Place Like Homecoming,” airs tonight at 9/8c on Fox.