New details on Matthew Perry’s death investigation. Then, what police bodycam footage reveals from Britney Spears being pulled over. Plus, Justin Timberlake’s collaborator, Timbaland speaks out. His controversial comments on Britney’s tell-all. And, Channing Tatum and Zoe Kravitz engaged. The massive ring we spotted. Then, Travis Kelce’s Halloween plans with Taylor Swift. Plus, the wildest star costumes. And, we’re with all the daytime hosts going all out for Halloween. Then, how the New Kids on the Block gave Lady Gaga her big break. Plus, “Happy Days” secrets straight from The Fonz. What Henry Wrinkler is revealing for the first time. Plus, what you never knew about his decades long friendships with Sylvester Stallone and Adam Sandler. And, “Dancing With the Stars” gets the “Stranger Things” treatment. Alyson Hannigan and Sasha enter the house of horrors as ET’s Halloween Week continues.