Hm...I like to use Amazon to see their "Other readers who purchased this also bought..." and "You might also enjoy...." yadda yadda, as it does a pretty good job at linking genre related and similar authors. Now, to actually answer your question, James Patterson is a solid suspense writer, though his writing doesn't delve into the...metaphysical suspense stuff quite like Koontz and King do.
Cheers on finding others!