K.C. is assigned to protect a foreign diplomat at a university ceremony and must go undercover by joining the school's drumline to secure a key position next to the diplomat.
After Lt. Pierce's true identity is revealed, Lucifer tries to figure out his motives. In order to earn Chloe's assistance in his investigation of Pierce, Lucifer goes above and beyond to help her solve the murder of a professional surfer. Meanwhile, Amenadiel deals with a personal health issue.
When Adam takes his kids to work with him for the day, they accidentally give his biggest client lice. Also, Andi feels like a bad mom when she's the only one in the family not to get lice.
A solar storm knocks out power in Los Angeles, and Team Scorpion must help a teen pilot and his girlfriend who are lost over the Pacific without navigation or radio contact. Also, during the crisis, Walter must look after a group of Ralph’s classmates, and Cabe tries to tell Allie finally that he loves her.
As Reign continues to terrorize the city, Supergirl teams up with Saturn Girl, and the two recruit Supergirl’s former enemies, Livewire and Psi, to form a team for a mission to Fort Rozz to recover a prisoner who has information on how to defeat Reign once and for all. Meanwhile, Alex babysits Ruby.
New York City. 1896. The heart of America’s Gilded Age. When a young boy prostitute is found butchered on the unfinished Williamsburg Bridge, an alienist named Laszlo Kreizler, a newspaper illustrator by the name of John Moore, a secretary, Sara Howard and a police commissioner named Theodore Roosevelt begin an investigation outside the law to find the serial killer.
Arie and the 15 remaining bachelorettes leave the Bachelor mansion behind and begin a cross-country trip to continue their search for love. In South Lake Tahoe, Nev., Seinne gets the first one-on-one date and joins Arie on a sheer adrenaline date: parasailing. Meanwhile, one woman gets a critical phone call that might change her romantic journey. A dozen ladies hike into the snowy wilderness on a survival-themed group date where they learn about roughing it in the woods from pro survivalists.
Shaun suspects his patient is lying about the reason for her injury and makes a controversial assumption about her motives. Dr. Melendez’s personal life could be affecting his work and, ultimately, his patients' lives.