Start off by heading towards Seers' Village. Once you arrive, you'll want to head south to reach your destination of the sorcerer's tower. After you reach the tower, head up to the first floor (American: second floor). Talk to Thormac and offer to help him find his scorpions. He will give you a cage, you must keep it with you at all times during this quest or you may take damage from trying to pick up a scorpion. Head back towards the bank in Seers' Village and talk to the Seer in the building south west of the bank. The Seer will give you a clue to find the first scorpion.
The First Scorpion
Once you have received the clue from the Seer, head to Taverley for the first Scorpion. Once in Taverley, run south until you reach a dungeon entrance. Enter the dungeon, If you have a dusty key or 70+ agility, skip to the next paragraph. If you don't have one, go to the Black Knights area in the southern part of the dungeon. Kill the Jailer to get a key, use the key on the Velrak the Explorer's cage to free him. Talk with him and you will get a Dusty Key as your reward. Go north out of the Black Knights area and cross the bridge toward the Chaos dwarves, then go north into Lesser demons area. Use your Dusty key on door to the west to enter the Blue dragons area.
Now that you're in the blue dragon area, run south-east, then north. You will be in an area of black demons, just keep running past them until you reach an area with poison spiders. There will be a isolated room with what apears to have no door. If you look closely on the north side, there will be an odd wall, search it to go in. Catch the scorpion then teleport out.
The Second Scorpion
The second scorpion is located at the barbarian outpost where barbarian assault is played. You can get here by using a games necklace to teleport. Once here, run east towards the fenced off areas. If you haven't finished the Barcrawl mini-quest you will have to pay 280 gp to enter. Enter the first gate, then enter the little building right next to the entrance. Catch the scorpion and teleport away.
The Final Scorpion
You should now head towards Edgeville. Once at the Edgeville lodestone, run west to the monastery. Go up the south-east ladder and then go into the room just north to find the last scorpion. Catch it, and head back to Thormac to recieve your reward. Congratulations Quest complete!!!