The CW has released a promo and preview clip from next week’s Supernatural episode, “As Time Goes By,” featuring the Winchesters’ paternal grandfather, Henry.

First, the promo that aired after last night’s episode:

In this promo, we see a mysterious man in 1950s-type clothing appearing in front of the brothers, demanding to see John Winchester. He then reveals that he is Henry Winchester, who Sam realizes is their grandfather. Henry has come from 1958, tracking a demon named Abbadon.

According to the synopsis, this episode will see the brothers working with Henry to hunt the demon as well as learn about their family.

We also have a preview clip from the episode:

In this clip, Henry appears in Sam and Dean’s hotel room, looking for John. He’s confused when he realizes that neither of them are his son. Sam and Dean are suspicious of the mysterious man who has appeared in the middle of their room asking about their father, but they don’t give him any answers – just as Henry does not give them any.

When the brothers try to stop Henry from leaving, he slips the handcuffs they try to use on him and instead cuffs them as he makes his escape.

It’s not often we see someone getting the jump on Sam and Dean like that, so we’re looking forward to seeing more of the brothers and their grandfather!

“As Time Goes By” airs Wednesday, January 30 at 9:00 p.m. ET.