Kelly Preston is joining Medium for a four episode arc, beginning Monday, April 14, 10-11:00 pm.

Her first episode is called “Partners In Crime,” where she plays Meghan Doyle, an attractive venture capitalist who likes what she sees when Joe Dubois (Jake Weber) makes a presentation on his new solar power-based invention to her investment firm. Her decision to independently fund and become business partners with Joe ultimately creates tension in his marriage to Allison (Emmy winner Patricia Arquette).

“We’re thrilled to have Kelly join us for the final episodes of Season 4,” said Executive Producer Glenn Gordon Caron. “For the role of Meghan Doyle, a venture capitalist who decides to underwrite Joe, we needed an actress who exuded both intelligence and sexuality. Someone who could stand toe-to-toe with Patricia and Jake, and credibly create chaos in a household and a marriage that is as strong as any on television.”

"Burn Baby Burn, Part I"

In the first of a two-part episode, when Joe’s mom Marjorie Dubois abruptly arrives for a visit, Allison frets about seeing her mother-in-law for the first time since her psychic abilities were publicly revealed - until she learns the real reason for the trip, on MEDIUM, Monday, March 10, 2008 (10:00-11:00PM ET/PT) on NBC.

Meanwhile, as Ameritips investigator Cynthia Keener attempts to nudge Allison’s dreams towards open cases, Ariel foresees the death of a classmate’s mother.  Later, an arson-related murder brings Allison, Devalos and Detective Lee Scanlon back together in an unexpected manner.  Leon Ichaso directs the episode written by Javier Grillo-Marxuach.

ALLISON’S LOYALTIES ARE TESTED WHEN HER VISIONS IMPLICATE DEVALOS’ CHIEF POLITICAL SUPPORTER AND FRIEND SENATOR GARRITY (GUEST STAR EMMY NOMINEE GREGORY ITZIN, “24”) IN A HORRIFIC CONSPIRACY — DIRECTED BY STAR MIGUEL SANDOVAL

Allison (Emmy winner Patricia Arquette) does her best to support Devalos’ (Miguel Sandoval) bid to reclaim the D.A.’s office, as her visions place his strongest political supporter and longtime friend Senator Jed Garrity (guest star Gregory Itzin) in the center of a horrific conspiracy. Meanwhile, Bridgette (Maria Lark) has a dream about a persistent creditor, calling from a world away. 

March 3 on NBC.

WITH MONEY TIGHT, ALLISON ACCEPTS AN OFFER BY LONG-TIME ADVERSARY LARRY WATT (GUEST STAR CONOR O’FARRELL, “CSI: CRIME SCENE INVESTIGATION”)

Girls Ain’t Nothing But Trouble

Allison’s (Emmy winner Patricia Arquette) long-standing nemesis, defense attorney Larry Watt (guest star Conor O’Farrell) decides to use her powers to his advantage — for a change — by hiring her as a consultant. Unfortunately, Allison’s dreams tell her that his client is guilty of killing his wife. Meanwhile, Devalos (Miguel Sandoval) and Ariel (Sofia Vassilieva) individually start new ventures.

PATRICIA ARQUETTE’S BROTHER DAVID ARQUETTE DIRECTS AN EPISODE WHERE ALLISON FACES A COMPLETE LOSS OF HEARING AFTER A WEALTHY, DEAF GIRL IS KIDNAPPED

Do You Hear What I Hear?

Allison completely loses her hearing when a wealthy, young deaf girl is kidnapped, so Joe (Jake Weber) steps in to assist with her and investigator Cynthia Keener’s (Anjelica Huston) actions on behalf of the parents (guest stars Nancy Travis and Steven Culp). Patricia Arquette’s younger brother David Arquette directs this episode. Miguel Sandoval, Sofia Vassilieva, Maria Lark, David Cubitt and Miranda Carabello also star.