CIA Season 2 Episode 4, titled Black Tie Optional, aired on CBS on October 26. According to Rotten Tomatoes, the official synopsis for the latest episode reads as follows:"When a prominent investor begins selling highly sensitive information to Korean agents, the team must go deep undercover at a high-end gala event to prevent a deadly invasion; Bill struggles with troubling discoveries of his father's past."According to TV Fanatic, the latest episode of CIA Season 2 featured a dangerous undercover mission for Colin to uncover the strange ties between a shady investor and North Korean agents. After a last-minute gala proved important for the mission, Colin used his cover to gain entry and learn details about the conspiracy.Elsewhere, Bill came clean to Katie about his profession but he struggled to give up on his father's past. A meeting with his father's former partner led to another shocking discovery, which could change the course of Bill's investigation in upcoming episodes.Here is the complete recap.Colin went undercover in CIA Season 2 Episode 4 View this post on Instagram Instagram PostCIA Season 2 Episode 4 featured an undercover mission for Colin. The team was tasked with investigating high-profile and shady investor Allen Perry, who made deals with oligarchs. After strong intel suggested Perry was spending most of his time in Asia with North Korean agents, the CIA was tasked with finding Perry's next mission. Colin went undercover as a psychiatrist and began a fake relationship with Meghan, Perry's COO.A divorced Meghan was immediately drawn to Colin, which helped him with key details about her boss. Colin and the team learned Perry was stateside to attend a school fundraiser. Meghan feared the North Koreans had turned Perry into a traitor and that the gala was a cover for an important mission. Colin convinced Meghan to attend the gala as his partner to make her ex-husband jealous.CIA Season 2 Episode 4 featured an international conspiracyMeghan managed to plant a bug on her boss in CIA Season 2 Episode 4, but the North Korean agents were two steps ahead. The agents were suspicious of Colin and Meghan's interest in Perry and eventually discovered the listening device. They killed Perry and a guard and barged into the gala, demanding to know who planted the bug. Elsewhere, the team learned the gala was shifted to the University because Perry needed access to the building's computer, which contained Sam Freeman's paper on satellite hacking.Things took a turn in CIA Season 2 Episode 4 when Colin and the team got intel that North Korean agents were stationed at the border with the South, claiming it was an exercise. However, they planned to use Freeman's paper to hack the American satellites overseeing North Korea.In the final moments of Episode 4, Colin fired to create a diversion that pitted the spies against each other. The team tracked down the North Korean agents before they could succeed in their mission and disabled the cell jammer that was blocking their signal.What did Bill learn about his father's past in CIA Season 2 Episode 4?A still from Season 2 (Image via Instagram/@fbi_cia)Another subplot in CIA Season 2 Episode 4 followed Bill, who was trying to uncover the truth about his father's past. While Bill tracked down files from his father's CIA past, most of the information was redacted, which led him to his father's former partner. Bill’s father's partner cautioned him against digging too deeply into his father’s past, asking whether he would want his own children to learn about his past mistakes.As the episode concluded, Bill learned that international assassin Felix Vincente was once his father's asset, which is likely why most of his records were redacted.You can stream the latest episode on Paramount+.For the latest scoops on your favorite TV shows and movies, follow SoapCentral.