Leonard Frank Meares (13 February 1921 – 4 February 1993) was an Australian writer of western fiction. He wrote over 700 Westerns for the Australian paperback publishers Cleveland and Horwitz using the pseudonym "Marshall McCoy", "Marshall Grover", "Ward Brennan" and "Glenn Murrell".
Among his most famous characters were "Larry & Stretch", Larry Valentine and Stretch Emerson. In the United States (Bantam Books) they they were known as "Larry & Streak" (Larry Vance & Streak Everett)" and the in the Nordic countries they were known as "Bill & Ben".
Only the head of a gang knows where stolen money is and he gets captured & taken elsewhere by train to stand trial. The boys are hired to accompany a bull on the same train & get involved with the gang leader, helping others to deliver him. The " 17 Guns" gang sets out to rescue him.