Charlie Eppes (David Krumholtz) and Amita Ramanujan (Navi Rawat) are married at CalSci.
Charlie's father Alan Eppes (Judd Hirsch), Charlie's older brother FBI Special Agent Don Eppes (Rob Morrow), and friends FBI Special Agents David Sinclair (Alimi Ballard), Colby Granger (Dylan Bruno), Nikki Betancourt (Sophina Brown), and Assistant United States Attorney Robin Brooks (Michelle Nolden) attend the ceremony.
After receiving a call from FBI Special Agent Liz Warner (Aya Sumika), Don and David leave the reception to arrest Ted Dacosta (Luke Rosen), a man wanted on fraud charges.
A tip from LAPD leads the FBI team to the leader of the community crime watch.
Charlie, Amita, Larry, and Otto Bahnoff (John Cariani), a plasma physicist who has assisted the FBI on two previous cases,[2][3] use the small world network to track the gun.
While discussing the math, Don and Charlie agree that, although they had spent their lives apart from each other, they want to keep the relationship they have with each other.
The team receives another call, this time leading them to the body of a woman who planned to drink and drive without a driver's license.
Amita, Charlie, Larry, and Otto find a woman who used her real personal information on a web site which referenced Don's gun.
With Charlie's analysis and further investigation, the agents discover that Mazzolla, a criminal, was in the area where Don lost his gun the day of the incident.
FBI Special Agent Ian Edgerton (Lou Diamond Phillips) suddenly appears to escort Hiller.
Confident about his work with the FBI, Don tells Robin that he will accept a promotion to become a special agent in charge.
[8] They decided to write the episode in a way in which fans would see some kind of resolution of storylines in the event that the series was cancelled.
"[14] Matt Roush of TV Guide Magazine's web site was surprised by the amount of closure in the episode.