The lost triplets

Alexander, James and Skye were triplets. They were stolen from their family at the age of 4. The family searched for them day and night never giving up, years past and they knew they had to face reality. The triplets weren't coming back. Alexander, James and Skye were stolen in daylight, they had wandered off from one of their friends birthday parties and they had been taken. of course it hadn't been random, they had been targeted. Now 10 years later they are no longer the happy care free children, they have scars both litteral and metaphorical. Alexander being the oldest always tried to protect his younger siblings but that didn't matter to them. They found a way to hurt the triplets whenever they could. Until one day when everything changed. A police raid and the kids were taken to the station. They were finally free from the cruel grasp of their abusers. Only to be reunited with their family. What really caused them to be abducted?