What is "blanvalet"

Blanvalet is a German publishing house, based in Munich, which was founded in 1935 in Berlin and is now part of the Random House publishing group. Blanvalet publishes entertainment literature and non-fiction, first in hardcover, and as paperbacks since 1998. The publisher is became well known with the novel series " Angélique". More recent authors include Charlotte Link, Marc Elsberg, Karin Slaughter, Diana Gabaldon and George R. R. Martin.