Breaking Bad fans will be all over the new spin-off Better Call Saul.

Bob Odenkirk reprises his role as lawyer Saul Goodman in the new series, which has been written by Vince Gilligan.

As with most TV and films, Odenkirk's been doing promotion for the show in the UK.

So when we asked him whether he'd heard from Bryan Cranston, AKA Walter White, about the new show, he decided to get his phone out.

He showed us an email sent the previous day:

From Bryan Cranston. To Bob Odenkirk.

It went like this:

"You and the show are really good Bob.

You have led your troops well into battle. Now go slay the critical few and take your rightful place among the stars.

You have arrived.

Bryan.

PS - I've taken a side job with Hallmark."

High praise from Walter White himself.

"He's a funny guy," said Bob.

Better Call Saul explores how Saul Goodman comes to be one of New Mexico's most infamous lawyers.

It has the same writers and editors as Breaking Bad, and stylistically has the same look and feel.

For the Breaking Bad geeks, episode one of Better Call Saul doesn't disappoint as two characters make short reappearances, including Mike Ehrmantraut (played by Jonathan Banks).

And that won't be all.

"There will be more Breaking Bad cameos throughout Better Call Saul," said Bob.

"The writers have a board in the writer's room with every character who ever appeared on Breaking Bad and they will draw from that collection of names.

"Just to be straightforward though, Jesse (Aaron Paul) and Walter (Bryan Cranston) are not in the first season of Better Call Saul. And I don't see how Walter White could be in it because I don't meet him until Breaking Bad happens.

"But I do think Jesse could be," he teased.

The show has already been commissioned for a second series.

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