“Dominic and I have been friends for a long time,” Booth told The List.

“His mother was my nursery school teacher.”

In fact, Booth and Cooper’s connection was a crucial factor in his decision to play Red Bill.

Douglas booth smiling

“That was part of what drew me towards making this job.”

“[Dom] was on it.”

“We have great chemistry together,” Booth emphasized.

Dominic Cooper and Douglas Booth on set

The series required a good deal of preparation beyond character work and dynamics, including horseback riding.

“I definitely had ridden the longest,” Booth shared.

“Dom was pretty good on a horse, too.”

Douglas Booth with a gun to his head

“We know how to wind each other up.

We have a lot of fun together.”

He added, “I thought these characters were perfect for us to play opposite each other.”

Hopefully, fans will get to see more of this dynamic in a potential second season of the series.