When the BAU is called to Kansas City to investigate a series of murders, a tense reunion ensues between Blake and her father, a retired police captain, and her brother, a detective, who must work together to help solve the crime.
Meredith's dishonesty is revealed, leading to unexpected consequences for her and others; the new chief resident is chosen.
Mickey takes Sabrina to visit her mother in jail to gain closure, but it turns out Mickey may be the one who needs it the most. While visiting his father, Chip learns that he is in danger behind bars and enlists Jimmy for help. Meanwhile, Ben inadvertently distracts the bullies.
When Colleen goes to Tim for help with an embarrassing ailment, she begs him not to tell the family. Also, Dougie enlists Joan to help her buy a gift for Matt and Colleen’s wedding; Heather gets jealous when her friends want to include Jen in their mommy group; and Professor Sinclair Wilde encourages Joan to ask her family to read a draft of her book.
After the mysterious death of an astronaut in a highly sensitive Mars simulation, the NCIS team must send Ernie into the habitat to investigate alone.