Elementary Season 2 returns with Episode 6 "An Unnatural Arrangement" tonight at 10 PM ET on CBS.

Episode Synopsis: When Captain Gregson's home is invaded, Holmes and Watson work to find the masked gunman before he strikes again. Meanwhile, Gregson gives his team some insight into his private life.

What is Elementary?

ELEMENTARY stars Jonny Lee Miller as detective Sherlock Holmes and Lucy Liu as Dr. Joan Watson in a modern-day drama about a crime-solving duo that cracks the NYPD's most impossible cases. Following his fall from grace in London and a stint in rehab, eccentric Sherlock escaped to Manhattan where his wealthy father forced him to live with his worst nightmare - a sober companion, Dr. Watson. A successful surgeon until she lost a patient and her license three years earlier, Watson viewed her new job as another opportunity to help people, as well as paying a penance. However, the restless Sherlock was nothing like her previous clients. He informed her that none of her expertise as an addiction specialist applied to him and he had devised his own post-rehab regimen - resuming his work as a police consultant in New York City. With no choice but to accompany her new charge on his jobs, Watson quickly realized she had a knack for playing investigator, and Sherlock found her medical background helpful.

If you can't make it to a TV check out this live stream online:

http://www.couchtuner.eu/elementary/

Check out this sneak peak trailer for "An Unnatural Arrangement"