MARLBOROUGH – Ghouls, goblins and costumes in all shapes and sizes paid an early Halloween visit to the city on Thursday, Oct. 24. The annual Trick-or-Treat and Horribles Parade turned Main Street into one sweet road of candy and other treats. By 5 p.m., hundreds of families made their way downtown. Dozens of businesses and organizations – from the mayor’s office and the Marlborough Public Schools to Kennedy’s and Welly’s – had bowls of candy (but not for long).