One Tree Hill returned last night with an episode that made it clear: this is gonna be a dark final season.

What can fans expect going forward?

On next week's "In the Room Where You're Sleeping," Brooke will confide in her father about a business venture; Quinn will convince Clay to seek assistance; Chris Keller will make a tempting offer to Alex; and Nathan will lead Dan alone with Haley and Jamie. Uh-oh!

Check out the official preview now and remember to visit our updated One Tree Hill quotes and One Tree Hill music sections each week.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.