1951
Pietro Pacciani murders his fiancée’s seducer

1961
January 14. Salvatore Vinci’s wife, Barbarina, found dead

1968
August 21. Barbara Locci and Antonio Lo Bianco murdered

1974
September 14. Borgo San Lorenzo killings

1981
June 6. Via dell’Arrigo killings
October 22. Bartoline Fields killings

1982
June 19. Montespertoli killings
August 17. Francesco Vinci arrested for being the Monster

1983
September 10. Giogoli killings
September 19. Antonio Vinci arrested for illegal possession of firearms

1984
January 24. Piero Mucciarini and Giovanni Mele arrested for being the Monster
July 29. Vicchio killings
August 19. Prince Roberto Corsini murdered
September 22. Mucciarini and Mele released from prison
November 10. Francesco Vinci released from prison

1985
September 7. Scopeti killings
October 8. Francesco Narducci drowns in Lake Trasimeno

1986
June 11. Salvatore Vinci arrested for the murder of his wife, Barbarina, in 1961

1988
April 12. Trial of Salvatore Vinci begins April 19. Salvatore Vinci acquitted, disappears

1989
August 2. Date of FBI psychological profile of the Monster of Florence

1992
April 27–May 8. Search of Pacciani’s house and grounds

1993
January 16. Pacciani arrested as the Monster of Florence

1994
April 14. Pacciani’s trial begins November 1. Pacciani convicted

1995
October. Chief Inspector Michele Giuttari takes over the Monster investigation

1996
February 12. Pacciani acquitted on appeal February 13. Vanni arrested for being Pacciani’s accomplice

1997
May 20. Trial begins for Lotti and Vanni, accused as the Monster’s accomplices

1998
March 24. Lotti and Vanni convicted

2000
August 1. Douglas Preston arrives in Florence

2002
April 6. Narducci’s body exhumed

2004
May 14. Chi L’ha Visto? program aired on Italian television
June 25. Preston leaves Florence
November 18. Spezi’s home searched by police

2005
January 24. Second police search of Spezi’s home

2006
February 22. Interrogation of Preston
April 7. Spezi arrested
April 19. Publication date of Dolci Colline di Sangue
April 29. Spezi released from prison
September/October. Preston returns to Italy with Dateline NBC

2007
June 20. Dateline NBC program on the Monster of Florence
September 27. Trial of Francesco Calamandrei as the Monster of Florence begins

2008
January 16. First hearing in trial of Giuttari and Mignini for abuse of office
May 21: Calamandrei is exonerated by a Florence court for lack of evidence