What’s on TV

SUCCESSION 9 p.m. on HBO. “Time for a blood sacrifice.” That’s the ominous message Logan Roy, the Waystar Royco chief executive and family patriarch, left viewers with in the final minutes of Season 2’s penultimate episode. Having testified before Congress following an explosive whistle blower allegation against his company, Logan , his family and his close associates head to the family’s Mediterranean yacht to plot their next steps. But who will take the fall to preserve the company? Logan will have to weigh which one of his children or loyal cronies is expendable, even as some suggest that it’s his head that may have to roll.

WHY WE HATE 10 p.m. on Discovery. This new nonfiction series from the executive producers Alex Gibney and Steven Spielberg examines what drives human beings to hate. By looking at everyday examples of violent disagreements over sports, politics, race, religion and social beliefs — both out loud and online — along with mass atrocities like the Holocaust, the show works to unravel the science and the evolutionary basis behind destructive human behavior. It’s tapped a team of experts, including scientists, an extremism expert and an international criminal lawyer. The filmmakers hope that by untangling this complex topic, people can better understand their own minds and work to keep hate from spreading.