Answer: blindalleys

AnswerCrossword Clue
BLINDALLEYSRoutes to work for a window treatment installer?
BLINDALLEYSLines of reasoning that go nowhere
BLINDALLEYSMany investigators' leads
BLINDALLEYSCul-de-sacs, basically
BLINDALLEYSStreets with only one way in or out