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SOME WORKS
- The House of Long Ago (Cassiopeia Vitt, #4)
- The Devils' Due (Cotton Malone, #12.5)
- The Patriot Threat (Cotton Malone, #10)
- The Kaiser's Web (Cotton Malone, #16)
- The Museum of Mysteries (Cassiopeia Vitt, #2)
- The Warsaw Protocol (Cotton Malone, #15)
- The Amber Room
- The King's Deception (Cotton Malone, #8)
- The Omega Factor
- The End of Forever (Cassiopeia Vitt, #5)