CBS is set to premiere the 27th season of its long-running reality show "Big Brother" on July 10, 2025, at 8 p.m. ET. The season, titled "Big Brother: A Summer of Mystery," features a "Hotel Mystère" theme, presenting an enigmatic yet luxurious house environment. The cast includes 16 new houseguests with diverse backgrounds such as a dungeon master, a professional bull rider, an aura painter, an attorney, and an AI consultant from Sarasota. A notable element this season is the inclusion of a 17th mystery houseguest, revealed during the premiere as former "Big Brother" contestant Rachel Reilly. Contestants will compete for a grand prize of $750,000. Meanwhile, ABC has renewed "The Bachelor" for its 30th season, with Scott Teti, previously a showrunner for "Bachelor in Paradise," taking over as the new showrunner. "Bachelor in Paradise" returns for its 10th season in summer 2025, featuring contestants from the main "Bachelor" series and its "Golden" spinoffs, including some cast members from "The Golden Bachelor." The showrunner has introduced stylistic and tonal changes to make the series more cinematic and to refresh its comedic elements. Both reality shows continue to be key fixtures in the summer television lineup for 2025.