Douglas' announcement that there's a fourth bionic offspring in the family - one he gave over to an adoptive family that gave him a normal, non-bionic life - triggers bickering among the Davenports over lies and family secrets, prompting them to gleefully air many hurtful disclosures at one another. Daniel hydroloops to the island academy to meet his dad, his uncle and his "cousins" (since Douglas fears immediately disclosing Adam, Bree and Chase as his siblings). Before Douglas reveals to Daniel that he has unactivated bionic capabilities, proximity to Bree's capsule awakens them, bestowing him with the capacity to match the abilities of any bionic being he touches.
—statmanjeff