Police Crew Construction Playset by Discovery Kids by Best-Lock Construction Toys, Inc.. $7.00. Works with other branded block sets. Includes two figures with accessories. Comes complete with full-color step-by-step building instructions. Contains over 160 pieces. Discovery Kids is all about inspiring kids to explore the awesome worlds around them. Cultivating curiosity and sparking new ideas, our products instill a life-long passion for discovery.