Related Clues:

• Merest amount
• Follow Tory leader contest
• A ransom call may call for one
• Very small amount that can only just be detected
• "Cheat" at drawing
• Track down, as a caller
• Element class including cerium
• Barely discernible amount
• Find the origin of
• Slight remnant
• Track down; tiny amount
• Particular element that's thin on the ground
• Manage to locate returning vehicle in case of trouble
• Follow leader of the run
• Very little time to run