'The Flash' season 4 episode 5 synopsis: "Girls Night Out"

Original air date of episode is November 7, 2017 and hit 2.38 million views.

Overview of episode:
Barry, Cisco and Harry try to find DeVoe. Felicity arrives at STAR Labs to take Iris and Caitlin out for a bachelorette party, while the boys plan a quiet bachelor party with a steak dinner and watching old home movies. Ralph shows up and takes them to a strip club, leading to drunken hijinks, which eventually ends up with Barry, Cisco, Ralph and Joe in jail, where Joe admits to Barry he is terrified of being a father again, with Barry comforting him. At the bachelorette party, the girls are confronted by Norvock, a minion of Amunet, who wishes to retrieve Caitlin, causing her Killer Frost persona to surface, with Iris breaking up the fight. Back at STAR Labs, Iris helps Caitlin tend to her injuries, causing Caitlin to worry about her friends due to her Jekyll and Hyde persona. Amunet ends up kidnapping Felicity and Iris, after being caught spying on them during the meta trade, causing Caitlin to embrace Killer Frost to rescue them, with Cecile helping to disarm Amunet, allowing them to escape. Iris asks Caitlin to be her maid of honor, proving their friendship. DeVoe chases down another meta.