Washington DC, Jan. 14 -- The much-awaited trailer of 'The Lincoln Lawyer Season 4' is finally out, offering a glimpse into Mickey Haller's toughest courtroom case yet.

Based on Michael Connelly's series of bestselling novels, the fourth season is based on the sixth book in The Lincoln Lawyer series, "The Law of Innocence," reported Deadline.

It sees Mickey Haller (Garcia-Rulfo) and his team work tirelessly to prove his innocence in the murder of a former client, Sam Scales (Christopher Thornton). To clear his name, they must unravel Sam's final scam, forcing them to go head-to-head with the DA's office, the FBI, and ghosts from Mickey's own past.

In the trailer, Berg is being set up to be a tough one to beat, but it's no surprise that...