In the new book ‘Saul Goodman v. Jimmy McGill,’ ‘Better Call Saul’ co-creator Peter Gould says he thought the character would be “too big” for the show

Read an excerpt from Alan Sepinwall's new book, "Saul Goodman V. Jimmy McGill: The Complete Critical Companion to Better Call Saul."

Saul Goodman, of course, went on to become one of Breaking Bad's big breakout hits. A spin-off series, diving into the past of 'Slippin' Jimmy', premiered in 2015 and ran for six seasons – largely to the same universal acclaim as Breaking Bad.