I enjoy Nora Roberts Trilogy's but wouldn't mind trying a different authors. Any suggestions?

I just finished reading Nora's "Sign of Seven Trilogy." I love books that don't end after just one book! Any suggestions on a good trilogy would be appreciated! Thanks in advance!|||Well these books are a little different from Nora's but I laughed so hard! Meg Cabot has two adult trilogies: The Queen of Babble series and The Boy Next Door. Happy reading!