"Flight Attendant" Season 2 is coming to HBO Max.

The streaming service has officially ordered another season of the dark comedy/thriller starring Kaley Cuoco; the season 1 finale, which aired on December 17, concluded the central mystery. However, fans will be happy to know that the showrunners already have ideas for continuing the series.

Spoilers for "Flight Attendant" ahead.

"Flight Attendant" follows the main character, Cathy Bowden. On a flight to Bangkok, she meets and flirts with a handsome passenger, Alex Sokolov (Michiel Uysman). After landing, they hook up, but when Cathy wakes up the next morning, Alex is dead in the bed next to her.

Terrified and hungover, she decides not to call the police. That was the beginning of a series of bad decisions that put her in a tight spot. Cathy's predicament eventually draws her lawyer friend Annie (Zosia Mamet).

"Flight Attendant" was initially billed as a miniseries, but there are many examples of similar shows that have followed. Cuoco told Entertainment Weekly that a second season was in the works from the beginning.

"I hope I don't sound too cocky," Cuoco said, "but the idea for season two was always there." We had a very clear path of what season 2 would look like, and we know exactly what it will look like."

Cuoco said.

Here's everything we know so far about "Flight Attendant" Season 2.

HBO Max has not set a release date for "Flight Attendant" Season 2. Streamers ordered Season 2 on December 18, the day after the Season 1 finale aired.

"Flight Attendant" Season 2 could begin filming in early 2021. In fact, Season 1 was suspended and filming resumed in the fall, a few months before the November premiere.

Thus, if "Flight Attendant" Season 2 begins filming in, say, spring 2021, it could debut by next fall.

The cast of Flight Attendant is led by Kaley Cuoco as Imperial Airlines employee Kathy Bowden.

Other cast members likely to return for Season 2 include:

Other key cast members such as Michiel Huisman as Alex Sokoloff and Colin Woodell as Buckley Ware are unlikely to appear.

But never say never. After all, Alex died in the first episode, but appeared throughout the season in Cathy's "Mind Palace." Both he and Buckley could return, either as visions/ghosts or in flashbacks.

Before delving into possible storylines for Season 2, let's review the ending of "Flight Attendant" Season 1.

Cassie and Miranda fly to Rome, their plan to frame Buckley (aka Felix) falls apart, and Cassie is left to face him alone. She is saved in the end by Shane, who turns out to be a CIA operative. Meanwhile, Miranda retrieved Alex's book (with bank account numbers) and disappeared with the money. With her stigma cleared, Cassie has sobered up and has been reinstated at Imperial Airlines. In addition, she receives an invitation from Shane to become a CIA "agent."

So begins a possible "Flight Attendant" Season 2 -- Kathy continues to fly around the world, ostensibly as an airline employee, but embarking on top-secret missions for the CIA. Since she is not trained, her assignments are expected to be "soft" ones (eavesdropping, building relationships, etc.).

Season 2 could follow Megan's escape after selling government secrets to North Korea. And we'll get a peek at what Annie will do after leaving a top law firm and where Miranda (and a lot of money) will go.

Showrunner Steve Yockey told Variety magazine, " If we do another movie, I think for us it will be another adventure for Kathy, like the Hitchcock character.

He added, "It might look a little different because she's really trying to live sober and make better choices, but you saw in the show that she chooses to be crazy a lot of the time and it doesn't all have to do with alcohol.