S1, E9: Pre-Nuptial

Available on iTunes, Prime Video, HBO GO, Hulu, HBO Max
The Roys assemble at an English castle to prepare for Shiv and Tom's wedding. The children reunite with their mother Caroline, who is every bit as acerbic as Logan. As guests mingle and clash, Kendall learns from Stewy and Sandy that their plot for a hostile takeover of Waystar has been fast-tracked in order to catch Logan off guard.
Starring Harriet Walter, Arian Moayed, Larry Pine