Related Clues:
- Drew an outline
- ''Quack'' comes out of it (2 words)
- "Quack" comes out of it (2 words)
- Followed back to a source
- Went line by line?
- Found by investigation
- Try to avoid payment for amphibian
- Drawn, revolutionary illustrations on Christmas cards, possibly?
- Used a stencil
- Aussie native is to evade payment
- Detected in-patient's heart beat faster than usual
- Followed the outline of