Slade was in the back lot, he stood there, waiting for Thea, his first strike was about to happen and Oliver would see he was in control of this game, no, this promise he had made. All tires on Thea's car had been slashed. Slade had to ways he was going to play this, Blood was on stand by or Slade would take her himself.
He might even trick Thea into thinking he was taken as well, wouldn't that be fun. He moved off his mask, then decided to go that way. Hench mean were easy to buy and with one click of his phone, Blood was in position to take Thea. All Slade had to do was put himself on the scene and make sure the scrambler went on as soon as Blood appeared on camera.
Changed into his business attire, he entered through the front door and instantly his eyes went to seek out the youngest Queen. He had met the family, tour the house, pissed Oliver off, just like knew him being here would most likely to the same. Great thing about being a villain, he had Oliver chasing ghost in the glades as he snatched his sister from right under his nose.