Concerns for safety of missing Hallett Cove man Grant McGowan Family and police have concerns for the safety of missing man Hallett Cove man Grant McGowan. Picture: SA Police Source: adelaidenow POLICE have concerns for the safety of a Hallett Cove man missing since Tuesday. Grant McGowan, 46, was reported missing on Tuesday when he failed to attend work and was not at his home. Police have appealed for assistance from the public to help locate Mr McGowan. He is described as about 175cms tall, of stocky build with brown short hair. It is not known what type or colour of clothing he was wearing when he went missing. Mr McGowan's car has not been used and remains at his Hallett Cove home. Family and police have concerns for his safety and ask anyone with information on his whereabouts to call the police assistance line on 131 444 or Crime Stoppers on 1800 333 000.