What to Watch Wednesday: South Carolina forensic scientist competes on ‘Big Brother’ Brooke Cain, The Charlotte Observer Big Brother (8 p.m., CBS) - New strangers move into Big Brother House for the show’s 23rd season. There are no North Carolinians in the show this season, so if you’re looking for someone to root for based on geography, our closest connection is Sarah Steagall, a 27-year-old forensic scientists from Boiling Springs, South Carolina. She currently lives in Ft. Myers Florida. Love Island (9:30 p.m., CBS) - Singles come together to look for romance in the Season 3 premiere. Younger (10 p.m., TV Land)- This final season of award-winning Darren Star series gets its TV premiere with two back-to-back episodes tonight (Season 7 already streamed on Paramount+). In this final season, Liza’s (Sutton Foster) personal life is on shaky ground as she tries to stay true to herself. And after a setback at work, Kelsey (Hilary Duff) doubts her career decisions and discovers a new creative outlet. Also, Maggie (Debi Mazar) gets cancelled.