Here are some of his notable works:
Novels:
* The Immaculate Thief (Il ladro innocente) (1995) - This was his debut novel and a critical and commercial success, winning the prestigious Premio Campiello. It is considered one of the most important Italian novels of the 1990s.
* The Last Night of Love (L'ultima notte d'amore) (1999)
* The Death of a Philosopher (La morte di un filosofo) (2001)
* The Son (Il figlio) (2006)
* The Man Who Loved the Sea (L'uomo che amava il mare) (2013)
* The Book of the Forgotten (Il libro degli scordati) (2018)
Screenplays:
* The Immaculate Thief (Il ladro innocente) (1997) - based on his novel
* The Last Night of Love (L'ultima notte d'amore) (2004) - based on his novel
* The Son (Il figlio) (2008) - based on his novel
* The Man Who Loved the Sea (L'uomo che amava il mare) (2016) - based on his novel
Plays:
* The Immaculate Thief (Il ladro innocente) (2002) - a stage adaptation of his novel
* The Last Night of Love (L'ultima notte d'amore) (2005) - a stage adaptation of his novel
Other:
* The Sicilian Connection (Il collegamento siciliano) (1998) - a non-fiction work about the Italian Mafia
Giustolisi's works are often characterized by a strong sense of place, intricate plots, and complex characters. He is known for his ability to create suspense and to explore themes of love, loss, and redemption.