After generations of legal influence over South Carolina's lowcountry, a deadly boating accident & the double homicide that followed lead investigators to reexamine the Murdaugh family.

Alex becomes the target of a violent attack; authorities question the family's involvement in past deaths.

Evidence suggests Alex embezzled millions; The lowcountry questions if Alex might have killed his wife & son.

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Lisa Ling delves into the world of benzodiazepine use & uncovers the troubling threat these drugs pose when used long term, & the challenges facing patients who try to quit.