Tom Ellis Tom Ellis

Long hours. Difficult patients. Sure, a lot of doctors think they have it rough — until they get a load of Dr. William Rush, that is.

In the new USA series Rush, which premieres on July 17 at 9/8c, Once Upon a Time's Tom Ellis plays an incredibly skilled and intelligent Los Angeles doctor who takes care of high-profile and wealthy clients looking for medical attention without any actual attention. "What we do is complicated. It's not about feelings. You can not care," he says in the exclusive sneak peek below.

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But while Dr. Rush's services may be in hot demand, his personal life — including his drug use, his insomnia, his angry best friend and his bitter ex-girlfriend — is a bit more rough around the edges. No wonder he doesn't want to get attached to his patients!

Check out the promo:

Rush premieres Thursday, July 17 at 9/8c on USA.