First six books in Anne Perry’s Thomas and Charlotte Pitt mystery series are on sale for $1.99 each today at Amazon, Barnes and Noble, Kobo, iTunes and Google Play Books.

The titles on sale are:

• The Cater Street Hangman (Volume 1)
• Callander Square (Volume 2)
• Paragon Walk (Volume 3)
• Resurrection Row (Volume 4)
• Rutland Place (Volume 5)
• Bluegate Fields (Volume 6)

The bestselling series is set in Victorian London. There are currently thirty-one books in the series.