Mandy Siegfried

George begins to overstay his welcome at Burke's apartment; Meredith learns a secret about her father; Bailey worries her colleagues will not treat her the same now that she's a mother; and Alex gets a lesson in bedside manners.

Recent events strain Burke and Cristina's relationship, Meredith's half-sister, Molly, is admitted to the hospital, and Mark and Derek must work together when two close-knit brothers seek medical help.

The interns take the biggest test of their careers, their first-year medical exams, as the residents attend to three injured mountain climbers. Meanwhile Callie's suspicions of George and Izzie grow, and Cristina struggles to write her wedding vows.

Reese and Finch find themselves marooned in a coastal town with an unidentified serial killer after the Machine simultaneously produces six seemingly random numbers during a fierce storm.

As a favour to her mother, Alicia represents a group of computer programmers who are involved in a dispute over their employment contract with a software company. When Alicia advises her clients to form a union, the assistants at Lockhart & Gardner get the same idea, leaving the firm's partners less than pleased. Meanwhile, Kalinda is irked when she hears that Robyn has a better benefits package than she does.

Sherlock is asked for help by a member of his support group because her heroin addicted sister has disappeared. Investigators find the young woman's body and fear that she would have to die because she witnessed a murder.