And in one of the show's greatest episodes ever, a fierce storm forces cherished characters to fight a rampaging river for their lives.

After being shot and left for dead by Katie Ryan, both Clay and Quinn fight for their lives while they have an out of body experience of being at the beach.

Brooke is arrested after it's discovered that Victoria and Millicent falsified profits and lied to investors to fund the men's line "Clothes 4 Bros".

Haley struggles with what has happened while Nathan decides to stay in Tree Hill a little bit longer to help her through the tragedy.

Clay lives due to a successful kidney transplant from Will (guest star Edwin Hodge), a man in a similar position in the in-between.

Haley later recognizes the woman's voice as Erin, a singer who enters an open mic night at TRIC.

Meanwhile, Nathan struggles in his new job, while Haley stumbles on finding Erin, and Skills returns to town with a new friend as Lucas' Mannequin.

Nathan's career as an agent takes a big step forward when he visits Atlanta, while Haley consoles Jamie regarding his new braces.

Julian tries to get Brooke to complete a list of dreams that Millicent made for her back when she had her company, including skydiving and a James Bond marathon.

Haley sets up a concert at TRIC featuring musical guest star, Kid Cudi, whom Erin is the opening act for, while Mia & Alex do friendly "celebrity bar-tending" competition to see who has more fans in Tree Hill.

Meanwhile, Quinn sneaks out of town to visit Dan to get his help in finding and killing Katie, but decides against it while driving back home and throws the gun in the river.

A major hurricane hits Tree Hill and Katie comes back to finish what she started with Quinn and Clay, but she is eventually shot and stopped for good.

Julian takes on a directing job and helps Mouth, Chase mentors Chuck and Alex reveals her unheard talent as a musician.

Sex games, secrets and shoelaces all come into play as the couples of Tree Hill celebrate Valentine's Day.

As the girls plan a surprise baby shower for Haley, the guys participate in try-outs for Jamie's baseball team.

As Haley's due date approaches, she starts preparing her friends and family to make sure that they are ready when the baby arrives.

The big day has finally arrived and the gang gathers at the hospital to await the birth of Haley and Nathan's baby.

Whilst Haley cares for their new daughter, Lydia, Nathan confronts Professor Kellerman (guest star Peter Riegert) about the accident.

Chase asks Alex to take a drug test for him, Quinn gets an offer to shoot in Puerto Rico and Brooke finds out she is pregnant.

Alex and Chuck are disappointed after Chase leaves for the Air Force, and Mouth and Millie start their new morning show together.

In the crossover, Haley and Mia traveled to Portland (where Life Unexpected is set) to sing in a music festival hosted by Cate's radio station.

The CW was hoping that the crossover event would make One Tree Hill's viewers want to check out Life Unexpected.

Mark Schwahn has decided to introduce a new style of the theme song every week by selecting different artists to perform it such as Kate Voegele and members of Fall Out Boy.

At the beginning of the season, Mark Schwahn said "there are a lot of people we'd like to bring back," specifically Paul Johansson and Danneel Harris.

Online confirmed that there are plans for Chad Michael Murray and Hilarie Burton to return to the series in Season 8.

[17] On December 7, 2010, Kristin Dos Santos reported that Murray and Burton would definitely not be back for Brooke's wedding, but they are still expected to return.

[21] Stephen Colletti was upgraded to series regular status from episode 14,[22] after appearing in a recurring capacity since season four.

[24] Mark Schwahn confirmed that Chad Michael Murray and Hilarie Burton would definitely not be in the final few episodes of season 8.

Nathan prepares for his second season in the NBA; The Scott family are expecting their second child and Haley feels the baby will be a girl.

[28] They began lying to investors about Clothes Over Bro's finances to fund the men's line, causing Brooke to be arrested.