I left Rome to continue my research for A Name in Blood, my Caravaggio novel which is released July 1 in the UK, in Malta. Caravaggio fled to the remote island off the coast of Africa and became (briefly) a member of the Knights of Malta. It was a strange trip for me, but the isolation and pure weirdness I felt there gave me important insights for the novel.

I spent December in Malta in a cheap hotel in a four-hundred-year-old building that was without heating and insulation, in a room where one of the windows didn’t close. I got sick. I took some drugs, staring across the harbor at the sheets of rain plummeting down on the Castel Sant’Angelo where Caravaggio was imprisoned for a time. It got damper in my room. I took too many drugs. I hallucinated, slept at unaccustomed hours and was awake when everyone else was in bed. I saw things that weren’t there. I drank far too many espressos at the Café Merisi, which takes Caravaggio’s family name and emblazons his face on the napkins, until I was as jittery as a June bug. A June bug with an overdose.

In this condition, I stood all day before The Beheading of Saint John, Caravaggio’s largest canvas and one of his most gruesome and disturbing. He showed John the Baptist collapsing, hands bound, on the floor of a dungeon, his executioner sawing his head away and a jailor gesturing for the severed head to be placed on a platter held by a young woman. It’s the only painting where Caravaggio signed his name. And he did it in a deep red, mingling with the blood spurting from the dying saint’s neck, giving me the title of my novel: A Name in Blood.

At night I wandered the narrow, deserted, windswept streets of Valletta’s Baroque center, weaving light-headed over the flagstones under the sad Christmas lights that rocked on the wind. Loudspeakers on the street lamps played cheesy carols. Alone as I was, I sang along, laughing to myself and feeling more than a little unhinged. In the alleys, I imagined Caravaggio here, knowing that men sought to kill him. I jogged giggling up the banks of steps that connect the streets along Valletta’s high ridges, as if I were fleeing. I panted in fear and slugged down some more drugs from the pocket of my raincoat and felt his horror of the dark.

I knew why Caravaggio had painted his figures emerging from the threatening shadows into a light so luminous that it glows straight through your skin and eyes and into the seat of your capacity for love, wherever that may be.

Stumbling down the steps toward my hotel above the gate where the Knights used to display the heads of Muslim pirates on spikes, I knew I was ready to write.