Competition can be murder

"Drake and Charlie are harassed, the threats soon escalating to attempted murder. Meanwhile their temporary landlords-the owners of Dunworthy castle-find out that Charlie is an investigator and solicit her reluctant aid in finding their kidnapped grandson."@en
"Charlie Parker and her husband, Drake Langston, have agreed to help out Brian Swinney, an old friend of Drake's, with his helicopter business in Scotland. After landing a contract to fly men and equipment to and from North Sea oil rigs, Brian must return home to care for his dying mother-so Charlie and Drake sign on as pilots. A much bigger problem than the unpredictable Scottish weather is the animosity of the union oilmen, who believe that union boats should be used for transport rather than helicopters."@en
"Charlie Parker and her husband have agreed to help an old friend, Brian, with his helicopter business in Scotland. When Brian must return home to care for his dying mother, Charlie signs on as a pilot. But the union oilmen believe union boats should be used for transport instead of helicopters. Soon threats escalate to attempted murder. Meanwhile, Charlie's landlords solicit her help in finding their kidnapped grandson."