The original theme of Catchword with Paul Coia was Orient Express by Jean Michele Jarre. This remains the second best use of Jarre in gameshows after Vic and Bob used Oxygene Pt IV on Families At War.
They used something different in later years.
In other news, there’s a new reality game called Whodunnit? starting on ABC in the States June 23rd. It sounds like The Mole crossed with Murder In Small Town X/The Murder Game. Keep an eye out for it, it sounds like Very Much The Sort Of Thing We Like.
Any relation to the Edward Woodward/Jon Pertwee game from the 70s is likely coincidental.