Best pals Jason and Daniel indulge in casual flings and revel in their carefree, unattached lives. After learning that the marriage of their friend Mikey is over, they gladly welcome him back into their circle. The three young men make a pact to have fun and avoid commitment. However, when all three find themselves involved in serious relationships, they must keep their romances secret from one another.

Straitlaced Princeton University admissions officer, Portia Nathan is caught off-guard when she makes a recruiting visit to an alternative high school overseen by her former college classmate, the freewheeling John Pressman. Pressman has surmised that Jeremiah, his gifted yet very unconventional student, might well be the son that Portia secretly gave up for adoption many years ago.

Former Syracuse, New York, police detective Carrie Wells has hyperthymesia, a rare medical condition that gives her the ability to visually remember everything. She reluctantly joins the New York City Police Department's Queens homicide unit after her former boyfriend and partner asks for help with solving a case. The move allows her to try to find out the one thing she has been unable to remember, which is what happened the day her sister was murdered.

Upon discovering her husband's infidelity, Sandy leaves the suburbs and moves into the city. There, she befriends Aram, a guy whose wife only married him so she could get a green card. Sandy hires Aram to be her nanny, and it isn't long until Aram and Sandy find out they get along wonderfully and start to date. But is their relationship real or is it, in fact, just a rebound for both of them?

After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City to tag along with an NYPD homicide investigation team for research purposes.

In 1964, a Catholic school nun questions a priest's ambiguous relationship with a troubled young student, suspecting him of abuse.