Sex Education has lost a few cast members ahead of season 4.
And star Jim Howick has admitted he's still not sure if he'll be making an appearance when the Netflix show returns.
"I think I am, but do you know what? I genuinely don't know yet, and that is the honest truth," the Colin Hendricks actor exclusively told Digital Spy.
"I don't know. They're filming now, but it's such an enormous cast, and it goes on for ages.
"So I'm sure that I'm in their plans, but because I'm not optioned, they'll probably tell me with a month to go.
"I'll probably find out soon, and I'm pretty sure I am, I would know if I wasn't. I think I'm probably in it, but probably in second block, and that films until February. So we've got ages to go."
He continued: "It's not like a sort of normal British sitcom where filming is kind of six to eight weeks. It's five months."
The former Horrible Histories star also spoke about Rakhee Thakrar's exit, and whether it would affect his character as the pair were in an on-screen relationship.
"I'm happy to join her wherever she is, but I'm also happy to take another payday from Netflix. That's cool with me," he said.
"Wherever she is just get me a drink and I'll be there. But I'm fairly sure I am going to be in it.
"I don't want to say anything for definite because in these situations, you just don't know obviously.
"With loads of fringe characters, in Sex Education there's probably like four principles, and then there's loads of sort of fringe characters that are massive. Tanya [Reynolds] and Simone and Rakhee, they're all really busy now.
"So it's time more than anything else. Time is scarce for me as well a little bit, but I'm happy to go back for a bit if they want me."
Even if Mr Hendricks isn't back again, fans can see Howick as Pat Butcher when BBC sitcom Ghosts returns later this year for series 4.
Sex Education seasons 1-3 are available on Netflix now.
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