Ron Howard reveals the 'coolest' of the Dan Brown mysteries

In the exclusive above clip from the 4K Ultra HD, Blu-ray and Digital release of the Ron Howard-directed, "Inferno," above, Howard explains how Tom Hanks' character Robert Langdon has changed over the course of three films.

Since the first film of the franchise, "The Da Vinci Code," through "Angeles & Demons" and now in "Inferno," Langdon has gone through quite the transformation, and Howard explains what that journey has been like in the footage above.

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Additionally, he also explains why he thinks "Inferno" is "probably the coolest" of the Robert Langdon/Dan Brown mysteries.

"Inferno" is out on home entertainment on Tuesday, Jan. 24.

See photos of Tom Hanks throughout his career:

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