Andrews' “Flowers in the Attic” novels.

“It’s described as American Gothic Horror, or American Family Saga Horror,” she explained.

“And it’s brilliant.

Jemima Rooper smiling

There’s something that grabs you like nothing else.”

Rooper shared the spotlight with high-profile castmates,including Kelsey Grammer, Paul Wesley, and Kate Mulgrew.

“They are page turners, and there is something that sucks you in.”

Jemima Rooper in “Flowers in the Attic”

However, reading the scripts gave her an entirely new perspective.

Suddenly, you are relating to her and on her side and rooting for her."

You need the roots of truth to invest in these characters."

Jemima Rooper in the rain

Ultimately, “Flowers in the Attic: The Origin” will satisfy long-time fans of V.C.

New episodes of “Flowers in the Attic: The Origin” air Saturdays at 8:00 p.m.

ET on Lifetime through July 30.