Serpents in the Cradle is a Starfinder Roleplaying Game adventure for four 3rd-level characters. This adventure continues the Horizons of the Vast Adventure Path, a six-part, bimonthly campaign in which the heroes are at the forefront of exploring and charting a newly discovered world filled with mystery. This volume also includes a look at the shady Aspis Consortium, relics of a philosophy of balance and renewal, and a selection of diverse alien creatures.