One Fatal Secret

Nicole Jameson has always been proud of her husband, Ethan. He's built a successful career in finance, and his employers, the Harrisons, treat them like family. They're a firm who look after their own and even gave a loan to the company chauffeur, Conrad, to fund his pilot licence.
When the two men are returning from a business trip, their plane crashes into the sea. No survivors are expected to be found. Nicole is heartbroken, much like Conrad's wife, Ania. They now share a bond of grief.
When evidence is found that Conrad took drugs shortly before the plane departed with him at the controls, the two women begin to wonder if all is not what it seems. But when they ask questions about events leading up to the crash, unsettling occurrences suggest it wasn't a good idea to pry. Sinister-looking men follow them, the Harrisons are increasingly cagey, and the women wonder if there is not more to this than a tragic accident.