Mommie deadliest

Former “7th Heaven” star Jessica Biel embraces hell in “The Sinner,” an unnerving eight-part miniseries about a shy young mother who, in a sudden fit of rage, commits a startling act of violence and — to her horror — has no idea why. The central mystery in this offbeat crime thriller isn’t who, or how, but why. Bill Pullman plays a police detective who tries to make sense of her actions.

9 p.m., USA

Girls just wanna have fun

Sketch comedy has long been a man’s world, with male players often slipping into dresses and falsetto voices to embody the few female characters that pop up. “Baroness von Sketch Show” does its part to level the playing field with fast, short vignettes written and performed by an all-female cast. The show is already a hit in Canada and deserves a chance to cross the cultural border, as “The Kids in the Hall” did.

9 p.m., IFC

The Lowe road

Rob Lowe has yet another TV gig — and this time he’s bringing along some family members. In the unscripted series “The Lowe Files,” he and his two sons, Matthew and John Owen, travel across the country to explore infamous unsolved mysteries.

9 p.m., A&E