The most obvious choice for me is, of course, Dame Agatha! Her books have been featured significantly in my prior games :
Mystery on the Blue Train for Terrifying Women
The Thirteen Problems for 13
Hickory Dickory Dock for Terrifying Women
Endless Night for In a Dark, Dark Woods
The Moving Finger for Terror in a Small Town
Hallowe'en Party for Pumpkin
However, other authors who showed up a lot in my prior bingo games include both Barbara Michaels and Phyllis Whitney, who write old-fashioned gothic romance:
Ammie, Come Home by Barbara Michaels for Reads with Booklikes Friends
The Walker in the Shadows by Barbara Michaels for Fear the Drowning Deep
Houses of Stone by Barbara Michaels for Gothic
Grey Gallows by Barbara Michaels for Haunted House
The Lost Island by Phyllis Whitney for Terror in a Small Town
Snowfire by Phyllis Whitney for Gothic
Listen for the Whisperer by Phyllis Whitney for Gothic
Columbella by Phyllis Whitney for Romantic Suspense
Last year, Anthony Horowitz was my wild card author - I was on a road trip during a chunk of September, and we listened to 4 Alex Rider books on the trip!
Links to my old bingo update posts: