He's normally dour, suspicious and tortured.

But when Daniel Salazar smiles, beware.

In this sneak peek from the two-part Season Finale of Fear the Walking Dead, Daniel's flashing his pearly whites at Nick as he tries to find out exactly what happened to Ofelia.

Watch a Sneak Peek of Season 3, Episode 15, “Things Bad Begun”

Daniel's clearly not satisfied with the explanation Nick has for Ofelia's death, and he's been trained to get information at any cost.

Will he turn back to his past life of torture in pursuit of closure?

Click here to watch a flip from Sunday's all-new episode to see how far he'll go in the Season Finale.

Watch the latest episode now on amc.com and AMC apps for mobile, XBox One, Apple TV, Roku and Chromecast.

Fear the Walking Dead's Season Finale airs Sunday at 9/8c on AMC. Click here to add a reminder to your calendar.

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