Photo: Gareth Gatrell/Marvel

Samuel L. Jackson as Nick Fury and Cobie Smulders as Maria Hill in Marvel Studios' SECRET INVASION, exclusively on Disney+.

Marvel is continuing its Phase 5 rollout with the upcoming Disney+ series,Secret Invasion— and one of its stars,Cobie Smulders, is teasing what’s to come.

As for what fans can expect from the anticipated title, Smulders exclusively tells PEOPLE: “This series is much more dark in tone than ones previous. It’s hard to know who to trust.”

“Secret Invasionshows us insight into the lives of agents working to keep Earth and its inhabitants safe,” Smulders, 41, continues. “Now, there is a major discovery of the Skrulls. Maria has been trying to get Nick Fury back to Earth to help with a multitude of problems but when the Skrulls become public knowledge, it finally gets his attention.”

But Smulders also says that “with Marvel creating content for the streaming platform, we are able to spend more time with characters and get to know their backstories and deepen their relationships.”

Des Willie/MARVEL

(L-R): Cobie Smulders as Maria Hill and Samuel L. Jackson as Nick Fury in Marvel Studios' SECRET INVASION, exclusively on Disney+.

This new series sees theHow I Met Your Motheralum return as Agent Maria Hill, which is a role she’s helmed for over a decade.

“It’s been an absolute dream to play Maria Hill for the last 10 years,” she says. “She is a fantastic, multi-layered character who has triumphed over some intense moments in Marvel history.”

As a reminder for fans who may have forgotten, Smulders points out that “the last time we saw Maria Hill on screen inSpider-Man: Far From Home, it was revealed in the end that she was a Skrull.”

“So the audience is in the dark as to what she has been up to,” she continues. “I’d like to think that she’s been sipping Mai Tais on vacation somewhere after coming back from the Blip but most likely, she has been working on a mountain of backlogged issues.”

Zade Rosenthal/Walt Disney Studios Motion Pictures/courtesy Everett Collection

THE AVENGERS, Cobie Smulders as Maria Hill, 2012.

Smulders has portrayed Maria Hill in several MCU projects, includingThe Avengers,Captain America: The Winter SoldierandAvengers: Age of Ultron.

WithSecret Invasion, she gets to reunite on-screen with frequent costar Jackson.Ben Mendelsohn,Kingsley Ben-Adir,Emilia Clarke,Olivia Colman,Don Cheadleand Martin Freeman also star in the series.

Smulders says “the people” are the best part of being in the MCU.

“I have been so lucky to work with some of the most creative, talented and kind people in the business,” she adds. “Also,my kidsthink I’m cool sometimes.”

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Secret Invasionpremieres June 21 on Disney+.

source: people.com