Pete and Violet prepare for their wedding day; things take a surprising turn with Addison and Sam; despite disagreements, the doctors come together to mourn the loss of Dell.
Watch Private Practice - Series 4 Online Free
Violet and Cooper make changes to their friendship to appease their significant others; Pete and Cooper argue over a patient's marijuana use; Addison debates going public with her new romance.
The man responsible for killing Dell and endangering Maya's life comes to the clinic with a heart condition; news of Addison's new romance is not well-received.
Emotions run high at the practice when Dell's orphaned daughter Betsey appears. Amelia and Pete can't agree about whether to carry out risky surgery on a pregnant woman who's in chronic pain.
Addison butts heads with a new oncologist while treating a newborn with a malignant tumor; Pete is uncomfortable when Violet tries to help a parolee.
Sam and Addison disagree over the treatment of a comatose patient who becomes pregnant; Charlotte and Pete face an ethical dilemma when a patient with HIV is in a serious car accident.
Pete finds Charlotte bloodied and bruised in the halls of the hospital, but only Addison learns the full extent of her injuries.
Charlotte suffers in silence after the assault while Addison tries to keep the events of that night a secret; Cooper and the doctors of Oceanside Wellness have trouble coping after the attack.
Charlotte's colleagues think they know what is best as she deals with the aftermath of her assault; Pete's estranged brother visits unexpectedly to ask him for help.
Cooper gets bad news about Charlotte's sexual assault case; a case involving a pregnant drug addict hits Addison hard.
Addison's mother demands she do whatever it takes to keep her partner alive; a medical consultation becomes complicated for Amelia and Pete; Charlotte and Cooper give intimacy another try; Violet considers publishing a revealing book
Addison tries to keep her distance from flirtatious Dr. Rodriguez; Sam worries about the care a patient is receiving; Sheldon refers Charlotte to a friend for psychiatric help.
Charlotte's attacker (Nicholas Brendon) arrives at the hospital in need of urgent care; Bizzy begs Addison for help when Susan's health deteriorates.
When Addison goes home to Connecticut to deal with a family tragedy, Sam and her friends decide to tag along; Sheldon and Violet fight over a death row patient's confession.
Cooper and Charlotte try to forgive each other after revealing secrets in couples therapy.
A woman and her husband want to harvest their unborn baby's eggs.
Sheldon falls for the critic who panned Violet's book; a patient is caught in a love triangle with her brother-in-law and sister; Cooper and Sam try to convince a family to put a boy's health above his wrestling career.
Pete's brother brings their mother in for a consultation; Violet catches Sheldon asking her arch enemy for a date.
Katie threatens legal action against Violet; Cooper suspects Charlotte still has feelings for her ex-husband.
Cooper and Charlotte second-guess their wedding plans; an investigator visits the practice to question the doctors about Violet's case.
The doctors launch an investigation after Betsey's second emergency room visit; Naomi makes a life-changing decision.
The doctors face a tough decision regarding the future of Oceanside Wellness; a new admirer offers Addison a tempting proposition.