If you've fallen hook, line and sinker for the inventively realized narrative tricks and mic-dropping twists that have come out of "Succession," get ready to buckle up for an even more exhilarating ride when the Emmy-winning HBO Original series launches its fourth and final season on HBO (at 9 a.m.) and HBO Go today. With billionaire tech mogul Lukas Matsson (Alexander Skarsgard) set to merge the Roy family's media conglomerate Waystar Royco with his GoJo company at the end of Season 3, Logan Roy's (Brian Cox) scheming children, Kendall, Siobhan, Roman and Connor---portrayed to back-stabbing perfection by Jeremy Strong, Sarah Snook, Kieran Culkin and Alan Ruck, respectively---find...Keep on reading: ‘Succession’: Seismic twists put scheming siblings through the wringer