Jacqueline Wright

The BAU is called to Miami to investigate a serial killer who appears to have a conflicted sexual identity. Meanwhile, JJ's secret is revealed.

Melinda encounters the angry ghost, Matt, a former pro-baseball player who crashed and burned and died in a car accident, when he tries to take over the body of a Justin Cotter, a young pitcher, during a high school ballgame. Justin is scared and confused and not aware of the battle taking place inside him. Melinda must show Justin what is happening to him and help the boy to turn his back on the powerful spirit.

When Natalie unwittingly helps a thief steal the bicycle of a biotech CEO, she ropes Monk into solving a crime straight out of "Encyclopedia Brown" -- until Monk learns the hard way how dangerous this thief really is. Bradley Whitford guest stars.

Lorelai and Rory plan a road trip to North Carolina to attend the wedding of Mia (KATHY BAKER - "Picket Fences"), a woman who served as their surrogate mother/grandmother for many years. Emily invites herself on the trip in an effort to get away from Richard, who is driving her crazy while he recuperates at home. At the wedding, Emily becomes upset by the close relationship Mia shares with Lorelai and Rory. Lorelai learns that Emily had visited Mia during the years they were estranged to ask for pictures of Lorelai and Rory. And Logan makes a surprise appearance to ask Rory to forgive him for his immature reaction to his business disaster. Meanwhile, Lane and Zack (recurring guest star TODD LOWE) ask Luke to be the godfather of their twins. When Lane goes into labor, Luke helps everyone get to the hospital.