Meredith breaks a hospital record; the doctors are sent scrambling in the wake of a massive overdose within the community; Jackson wants to take Maggie camping; Levi and Nico's relationship continues to develop.

Patients flood the hospital after gunfire goes off at a parade; a blast from the past throws Maggie off her game on the same day that Meredith tries to talk to her about dating Deluca; Owen and Amelia get some potentially life-altering news.

Meredith gains some clarity on her dating situation; the strain on Bailey and Ben's marriage comes to a head; Betty surprises Owen and Amelia.

Amelia and Koracick tackle a daunting surgery on Catherine; Richard urges Meredith to visit her father before his time is up.

Meredith questions Link's relaxed approach to a patient's treatment; Maggie worries that Richard, Jackson and Catherine haven't come to terms with Catherine's diagnosis; Deluca steps up in the operating room when Owen faces a setback.

Practically raised at Seattle's Station 19, Andy Herrera is a confident firefighter who is also the daughter of Pruitt Herrera, the formidable head of the firehouse. Capt. Pruitt was Andy's primary inspiration to become a firefighter and is a mentor to both her and Jack Gibson, the lieutenant at the station. Jack is as fearless as Andy is by-the-books, but when the two are together, sparks fly and opposites attract. The two are joined by Maya Bishop, Dean Miller, Travis Montgomery, Victoria Hughes, and the station's newest addition, rookie Ben Warren. The team also works closely with Seattle PD, often running into Andy's former flame Ryan Tanner.

At fictional Princeton Plainsboro Teaching Hospital in New Jersey, prickly genius Dr. Gregory House tackles health mysteries as would a medical Sherlock Holmes, all the while playing mind games with colleagues that include his best friend, oncologist James Wilson. House, an acerbic infectious disease specialist, solves medical puzzles with the help of a team of young diagnosticians. Flawless instincts and unconventional thinking help earn House great respect, despite his brutal honesty and antisocial tendencies.

Set in Chicago, this medical drama deals with the personal and professional crises of the doctors in the emergency room at County General Hospital. From the exciting to the mundane, a day in the frantic hospital serves up many interesting dilemmas as well as heartrending choices for everyone on staff.

Annalise Keating (Oscar- and Tony-winning actress Viola Davis), a brilliant, charismatic and seductive professor of defense law, teaches a class called How to Get Away With Murder. Annalise, also a criminal defense attorney, selects a group of students -- the best and the brightest -- to assist with cases at her firm alongside her employees, the trustworthy and discreet Frank Delfino (Charlie Weber) and Bonnie Winterbottom ("Gilmore Girls" alum Liza Weil), an associate attorney. Mysteries arise that test everyone's limits and reveal dark truths.

Conrad Hawkins is one of Chastain Park Memorial Hospital's best doctors. Charming and arrogant, Conrad likes to take an unconventional approach whenever possible and believes it's his personal duty to shatter the romantic illusions of the first-year residents. Dr. Devon Pravesh is an innocent idealist who leans on his finely tuned moral compass, but with Conrad's help, he begins to realize that the practice of medicine is a business, like any other, with less-than-angelic patients and fallible doctors.