Following in the footsteps of Lewis Perdue, Michael Baigent and Richard Leigh, is Catholic author Jack Dunn, author of The Vatican Boys:

In the last five months, Dunn has received "several oral and written credible preliminary reports from literary and/or linguistic experts confirming that substantial similarities in many constituent elements" between the two books are present "and would be readily apparent to reasonable lay readers of both books," according to the lawsuit.

At least he's only asking for a small amount as restitution - what's $400 million (say it out loud, it's almost funny)...