Possible Clues:

• React badly receiving bill for engineer
• One designs buildings
• Person who makes up stories?
• Wren for one cat thrice damaged
• Wren was one flying the Arctic
• Wren was one touring the arctic
• Designer needing skill to incorporate hectic working
• Planner's bill found inside damaged crate
• Wren eg, male, grabbing insect’s tail, caught on outside
• Author's note in a short page