McGARR AND THE POLITICIAN (Penguin Crime Fiction) in Paperback format by Gill, Bartholomew. Published by Random House Books for Young Readers in 1982. Available in New condition.
Bartholomew Gill was the pen name of Mark C. McGarrity, an Irish-American crime fiction and mystery novelist and newspaper features writer and columnist writing on nature and outdoor recreation for The Star-Ledger. He was the author of 22 mystery novels, set in Ireland, and featuring a "resourceful police detective named Peter McGarr." Source: Wikipedia