Gold Rush: The Dirt (2012- )

Memory of a Killer is a dramatic thriller about a hitman who develops early onset Alzheimer's. Angelo lives a double life as an assassin and a family man - which all worked out well until he was hit with early onset Alzheimer's. Now his worlds are colliding, putting his family in danger.

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.

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.

In Watson a year after the death of his friend and partner Sherlock Holmes at the hands of Moriarty, Dr. John Watson resumes his medical career as the head of a clinic dedicated to treating rare disorders. Watson's old life isn't done with him, though — Moriarty and Watson are set to write their own chapter of a story that has fascinated audiences for more than a century. Watson is a medical show with a strong investigative spine, featuring a modern version of one of history's greatest detectives as he turns his attention from solving crimes to addressing the greatest mystery of all: illness, and the ways it disrupts our lives.

After achieving success in her younger years, the brilliant septuagenarian Madeline Matlock rejoins the work force at a prestigious law firm where she uses her unassuming demeanor and wily tactics to win cases and expose corruption from within.