In this farewell seasons, multiple tragedies occurs that forces the group to make life altering decisions that could have the trajectory to change their lives.

[39][40] On July 6, 2012, Justin Deeley's exit from the show was announced after he was written out of the season premiere, although a rep says the "door is still open for him to reappear in future episodes.

"[41] Adam Gregory reprises his role of Ty Collins in the special "what if" episode set to air in late January marking his comeback to the show after four seasons.

[45] On August 1, 2012, it was announced that Lindsey McKeon would play Suzanne in a recurring role,[46] as well as rapper Sam Adams to guest star as himself in an October episode.

[53] On 8 September 2012, Zap2it announced that Amber Stevens would guest star as Bryce, an attractive and highly intelligent applicant to work at Max's company.

[55] On September 17, 2012, it was revealed that former Parks and Recreation's star, Natalie Morales, would play Ashley - a woman who heads up a professional security detail - in a recurring role.

On September 25, 2012, TV Guide revealed that British singer Taio Cruz would guest star as himself in the 100th episode due to air in November.

[57] On October 4, 2012, TVLine announced that Canadian cult-fave group, Tegan and Sara, would guest stars as themselves in an festive episode due to air in December.

[58] On October 6, 2012, Perez Hilton revealed that British pop star Rita Ora would be appearing as herself in an episode due in air in January 2013.

[59] On October 15, it was announced that Zachary Ray Sherman and Abbie Cobb will come back for the 100th episode and reprise their role of Jasper and Emily, respectively.

[60] On October 29, 2012, it was revealed that Glee star Grant Gustin would play Campbell, a charming and good-looking college student from a wealthy and privileged background and would appear in multiple episodes.

[61] On November 12, 2012, it was announced that Joey McIntyre from New Kids on the Block, would guest star in an episode due to air in February 2013, playing an up-and-coming music manager who had some business with Dixon.

[62] On November 13, 2012, it was announced that Lyndon Smith would play Michaela, a "free-spirited" and incredibly talented singer who has a connection to one of the regular characters, in a recurring role for six to nine episodes.

[63] On January 16, 2013, it was revealed that Olly Murs would guest star as himself and perform his tracks "Troublemaker" and "Right Place Right Time" in an episode slated to air in April.

[71] Zap2it thought that Teddy and Silver having a baby together is a "weird thing to happen, but we're not complaining about anything that means we'll have Trevor Donovan on our TV screens for an undetermined amount of episodes.

It went on criticizing the lack of resolution for Silver, adding: "[Her] quest to have a child before she is stricken by the breast cancer that's inevitably coming to kill her (I know), was the one thing that wasn't wrapped up at all.

Silver's surrogate lost her baby last week, which is tragic, and in the finale, she learns that on top of that, her potential cancer has turned into a full-blown malignancy.

They also questioned if the fan-service reuniting the core couples from previous seasons was a smart move, "I suppose, if you are one of those people who are still shipping yourself with whomever you had a crush on in high school.

Are they so invested that the big ending of Liam chasing down a plane with his motorcycle in order to propose to Annie is how they wanted this to finish up?

As well as every episode from the season, the DVD release features bonus material such as deleted scenes, gag reels and behind-the-scenes featurettes.

- Commentary on the 100th episode 902-100 Featuring cast members: Jessica Stroup, Matt Lanter, Tristan Wilds, Michael Steger and Scott Weinger.