Rodriguez says you can expect the show to explore a lot more of his character's identity, which began to develop during his tough life as a kid growing up in the foster care system.
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"We see these glimpses and moments of his vulnerability and his heart and I feel like that allows him to then be the weird, sometimes off-putting guy because we see that there's something beneath all that," said Rodriguez. "Yeah, we're going to be mining through a lot of that kind of stuff."
While there is plenty of drama on the way, you can also still expect some levity.
"He has a way with words. And it's very direct. It's kind of a quality I love about him," said Rodriguez. "I think it's quite refreshing in a way. The guy, if he likes you, boom, you'll know. If he doesn't, boom, you're going to know. And so, you know, that's a bit of his awkwardness."
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Rodriguez is not only back in his tweed three-piece suits for his role - a nod to the author of all the "Will Trent" books- he's also back wearing something that doesn't get as much attention...the shoes!
"They're beautiful. They're so old and worn. And I love --it's like, that's the guy! You know, those shoes, for me, represent so much about this character, just hasn't changed them. They're uncomfortable!" he laughed.
"Will Trent" returns Tuesday, Feb. 20 on ABC.