On Monday night, One Tree Hill airs its final episode of 2009.

As you might expect, the show won't go on hiatus quietly. The following developments will be highlighted:

• Quinn offers assistance to Clay;
• Nathan and Haley prepare to move to Barcelona;
• Alex faces another crisis;
• Millie's relationship with Mouth is in trouble;
• Dan makes an announcement that stuns Rachel... and his studio audience.

TV Fanatic will post the latest One Tree Hill quotes and music from "Some Roads Lead Nowhere" soon after it ends. For now, enjoy the following trailer for the episode:

[video url="http://www.tvfanatic.com/videos/some-roads-lead-nowhere-promo/" title="Some Roads Lead Nowhere Promo"] [/video]

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