Detective Vincent Riley

Tracker features lone-wolf survivalist Colter Shaw, who roams the country as a "reward seeker," using his expert tracking skills to help private citizens and law enforcement to solve all manner of mysteries while contending with his own fractured family.

There are cultural differences between England and America in many respects. But that doesn't stop British socialites Annabelle Neilson and Caroline Stanbury from running in similar social circles with Americanexpats Juliet Angus, Caprice Bourret, Marissa Hermer and Noelle Reno, who all enjoy a posh London lifestyle in Ladies of London. The ladies adhere to the city's unwritten rules that one's reputation is everything and respect is not easily earned. Also featured on the docuseries is Julie Montagu, an Illinois native who is married to the heir to the Earl of Sandwich.

NCIS (Naval Criminal Investigative Service) is more than just an action drama. With liberal doses of humor, it's a show that focuses on the sometimes complex and always amusing dynamics of a team forced to work together in high-stress situations. Leroy Jethro Gibbs, a former Marine gunnery sergeant, whose skills as an investigator are unmatched, leads this troupe of colorful personalities. Rounding out the team are Anthony DiNozzo, an ex-homicide detective whose instincts in the field are unparalleled and whose quick wit and humorous take on life make him a team favorite; the youthful and energetic forensic specialist Abby Sciuto, a talented scientist whose sharp mind matches her Goth style and eclectic tastes; Caitlin Todd, an ex-Secret Service Agent; and Timothy McGee, an MIT graduate whose brilliance with computers far overshadows his insecurities in the field; Assisting the team is medical examiner Dr. Donald "Ducky" Mallard, who knows it all because he's seen it all, and he's not afraid to let you know. From murder and espionage to terrorism and stolen submarines, these special agents travel the globe to investigate all crimes with Navy or Marine Corps ties.

Set in the middle of the jungle, "The Challenge: War of the Worlds 2" returns to a classic team format; 14 Brits will battle it out against 14 Americans for their share of the $1 million-dollar prize.

When Calls the Heart is inspired by Janette Oke's bestselling book series about the Canadian West, the series tells the captivating story of Elizabeth Thatcher, a young teacher accustomed to her high society life, who receives her first classroom assignment in Coal Valley, a small coal mining town where life is simple, but often fraught with challenges. Upon arrival, Elizabeth befriends Abigail Stanton, a wife and mother whose husband, the foreman of the mine, along with a dozen other miners, has just been killed in an explosion. The newly widowed women find their faith is tested when they must go to work in the mines to keep a roof over their heads. Set against the wild canvas of a 19th century coal town, Elizabeth will have to learn the ways of the frontier if she wishes to thrive in the rural west on her own.