I'm late as usual. I hope Shadow is found and taken to a good home. Maybe someone was as upset as you and did as Pam suggested: kidnapped him. Others have offered good advice but I must ask... What are the laws in your area? In the community where I live dogs that are kept outdoors must have ample space (not sure of the correct intended meaning of ample) to move around, shelter from rain, sun, inclement weather, etc. plus water available at all times when kept outdoors. There's also a noise ordinance in place. Check and maybe law enforcement could become involved. I do believe the direct approach is best. Calmly talking about the situation. This advice may not do any good if poor Shadow isn't found but maybe it could help someone else.