Possible Clues:

• That will get added at the end
• Fish left around here in France: more for Will?
• Will's rider police set up in a twist
• Additional item appended to a will
• Rider backs detectives' entry in spring
• Will have this addition
• Will part of police department turn up in Helix?
• Will's rider upset detectives, breaking wind
• Supplement to a Will
• Will supplement of fish oil initially improve capacity for love?