Why did O’Brien give the memory stick to Martin Coyne? And who is ‘Employee 18883’?

One question stands out among the many that arise in the Denis O’Brien versus Red Flag Consulting legal action. Why did O’Brien give the USB memory stick, the sole piece of evidence upon which he launched his extraordinary case by seeking a search and seize warrant against Red Flag, to Martin Coyne, a man who has no qualifications in computer forensics as claimed and who has, according to experts who do have precisely those skills, damaged that evidence to the point of uselessness?

And in seeking to probe the many other questions around that single imponderable, a new figure had emerged in the saga to beguile those trying to make sense of it all.