That summer-the summer my husband died-we all had identities we were loath to let go of. My son had his Batman costume, I still used my husband’s surname, and Little Bee, though she was relatively safe with us, still clung to the name she had taken in a time of terror. We were exiles from reality, that summer. We were refugees from ourselves.

To flee from cruelty is the most natural thing in the world, of course. And the timing that brought us together that summer was so very cruel. Little Bee telephoned us on the morning they released her from the detention center. My husband picked up her call. I only found out much later that it was her-Andrew never told me. Apparently she let him know she was coming, but I don’t suppose he felt up to seeing her face again. Five days later he killed himself by hanging. They found my husband with his feet treading empty air, touching the soil of no country. Death, of course, is a refuge. It’s where you go when a new name, or a mask and cape, can no longer hide you from yourself. It’s where you run to when none of the principalities of your conscience will grant you asylum.

Little Bee knocked on my front door five days after my husband died, which was ten days after they released her from detention. After a journey of five thousand miles and two years, she arrived just too late to find Andrew alive, but just in time for his funeral. Hello Sarah, she said.

Little Bee arrived at eight A.M. and the undertaker knocked at ten. Not one second to, or one second past. I imagine the undertaker had been silently standing outside our front door for several minutes, looking at his watch, waiting for our lives to converge onto the precise fault line at which our past could be cleaved from our future with three soft strikes of the bright brass knocker.

My son opened the door, and took in the undertaker’s height, his impeccable tailoring, and his sober demeanor. I suppose the undertaker looked for all the world like Batman’s workaday alter ego. My son shouted along the hallway to me: Mummy, it’s Bruce Wayne!

That morning I walked out onto the street and I stood there, looking at Andrew’s coffin through the thick, slightly greenish glass of the hearse window. When Little Bee came out to join me, bringing Batman by the hand, the undertaker ushered us to a long, black limousine and nodded us in. I told him we’d rather walk.

We looked as if we’d been cobbled together in Photoshop, the three of us, walking to my husband’s funeral. One white middle-class mother, one skinny black refugee girl, and one small Dark Knight from Gotham City. It seemed as if we’d been cut-and-pasted. My thoughts raced, nightmarish and disconnected.

It was only a few hundred yards to the church, and the three of us walked in the road ahead of the hearse while an angry queue of traffic built up behind. I felt awful about that.

I was wearing a dark gray skirt and jacket with gloves and charcoal stockings. Little Bee was wearing my smart black raincoat over the clothes they let her out of the detention center in-a mortifyingly unfunereal Hawaiian shirt and blue jeans. My son was wearing an expression of absolute joy. He, Batman, had stopped the traffic. His cape swirled in his tiny slipstream as he strode proudly ahead, his grin stretching from bat ear to bat ear beneath the darkness of his mask. Occasionally his superior vision would detect an enemy that needed smiting, and when this occurred my son would simply stop, smite, and continue. He was worried that the Puffin’s invisible hordes might attack me. I was worried that my son hadn’t done a wee before we left the house, and might therefore do it in his bat pants. I was also worried about being a widow for the rest of my life.

At first I’d thought it was quite brave of me to insist on walking to the church, but now I felt dizzy and foolish. I thought I might faint. Little Bee held on to my elbow and whispered to me to take deep breaths. I remember thinking, How strange, that it should be you who is keeping me on my feet.

In the church I sat in the front pew, with Little Bee on my left and Batman on my right. The church was stuffed with mourners, of course. No one from work-I tried to keep my life and my magazine separate-but otherwise everybody Andrew and I knew was there. It was disorientating, like having the entire contents of one’s address book dressed in black and exported into pews in nonalphabetical order. They had classified themselves according to some unwritten protocol of grief, blood relatives ghoulishly close to the coffin, old girlfriends in a reluctant cluster near the baptismal font. I couldn’t bear to look behind me and see this new natural order of things. It was all very much too sudden. A week ago I had been a successful working mother. Now I was sitting at my husband’s funeral, flanked by a superhero and a Nigerian refugee. It seemed like a dream that might be awoken from with relatively little effort. I stared at my husband’s coffin, strewn with white lilies. Batman stared at the vicar. He cast an approving eye over the vicar’s stole and surplice. He gave the vicar a solemn thumbs-up, one caped crusader to another. The vicar returned the salute, then his thumb returned to the faded gilt edging of his Bible.

The church was falling quiet; expectant. My son looked all around, then back at me. Where’s Daddy? he said.

I squeezed my son’s hot, sweaty hand, and listened to the coughs and sniffles echoing round the church. I wondered how I could possibly explain my husband’s death to his son. It was depression that killed Andrew, of course-depression and guilt. But my son didn’t believe in death, let alone in the capacity of mere emotions to cause it. Mr. Freeze’s ice rays, perhaps. The Puffin’s lethal wingspan, at a stretch. But an ordinary phone call, from a skinny African girl? It was impossible to explain.

I realized I would have to tell my son the whole story, someday. I wondered where I would begin. It was two years before, in the summer of 2005, that Andrew had begun his long, slow slide into the depression that finally claimed him. It started on the day we first met Little Bee, on a lonely beach in Nigeria. The only souvenir I have of that first meeting is an absence where the middle finger of my left hand used to be. The amputation is quite clean. In place of my finger is a stump, a phantom digit that used to be responsible for the E, D, and C keys on my laptop. I can’t rely on E, D, and C anymore. They go missing when I need them most. Pleased becomes please. Ecstasies becomes stasis.

I miss my finger most on deadline days, when the copy checkers have all gone home and I’m typing up the last-minute additions to my magazine. We published an editorial once where I said I was “wary of sensitive men.” I meant to say “weary,” of course, and after a hundred outraged letters from the earnest boyfriends who’d happened to glance at my piece on their partner’s coffee table (presumably in between giving a back rub and washing the dishes), I began to realize just how weary I was. It was a typographical accident, I told them. I didn’t add, it was the kind of typographical accident that is caused by a steel machete on a Nigerian beach. I mean, what does one call the type of meeting where one gains an African girl and loses E, D, and C? I do not think you have a word for it in your language-that’s what Little Bee would say.

I sat in my pew, massaged the stump of my finger, and found myself acknowledging for the first time that my husband had been doomed since the day we met Little Bee. The intervening two years had brought a series of worsening premonitions, culminating in the horrible morning ten days earlier when I had woken up to the sound of the telephone ringing. My whole body had crawled with dread. It had been an ordinary weekday morning. The June issue of my magazine was almost ready to go to the printers, and Andrew’s column for The Times was due in too. Just a normal morning, but the soft hairs on the backs of my arms were up.