One of the great current series, “Succession” (HBO, 9 p.m.) ends tonight in a highly anticipated 90-minute series finale that will once and for all answer the question posed in the show’s first episode: Who exactly will takeover the huge media company following the big man who built it? They’ve flirted with every possibility over four luxurious seasons, but my money’s on Cousin Greg. 

It’s a night of big finales, though, with “Barry” (HBO, 10:30 p.m.), the Bill Hader series with Henry Winkler also comes to a conclusion after four seasons.

Also ending its season is “Somebody Somewhere” (HBO, 11:05 p.m.), but unlike the other shows, may well be back.

“Yellowjackets” (Showtime, 9 p.m.) also ends its second season, tying up some loose ends while forging a new path forward.

“Ghosts of Beirut” (Showtime, 10:05 p.m.) is a new four-part miniseries about Middle East intrigue and the pursuit for an elusive Lebanese terrorist, with Dermot Mulroney and Dina Shihabi. 

From the Capitol’s west lawn, The National Memorial Day Concert 2023 (PBS, 8 p.m.), hosted by Joe Mantegna and Gary Sinise, features Trace Adkins, Yolanda Adams, Megan Hilty, Joe Dee Messina, the duo War and Treaty, Phillip Phillips and the National Symphony Orchestra as well as appearances by actors John Slattery S. Epatha Merkerson, Mary McCormack, Chosen Jacobs and Dule Hill. It will rerun at 9:30 p.m.