Batman leaves a note a week after Pamela goes missing.
Not about her. About him.
A scrap of paper in the passenger door handle of my car, parked outside Major Crimes on a Thursday night. An address in the Narrows. Nothing else.
I sit in my car with the paper and think about what I'm being given and what it costs to take it.
He's been running parallel to this case for months. He found the survivors. He gave me the name. He's been at every scene before us and after us and has never asked for anything directly. This is not asking. This is placing something in my path and letting me decide.
I think about Pamela's field kit in the drainage channel. The hazmat supervisor saying unlikely with the specific care of someone who means something else.
I think about the case we have and the case we need.
I go find Renee.
"I need to reach out to Batman," I say.
She looks at me.
"Not about the address." I put the paper on her desk. "I need evidence that closes the buyer connection. Something the FBI process won't produce in time. He's been inside this case longer than we have and through channels we can't access." I hold her eyes. "I'm going to ask."
Renee looks at the paper. Looks at me.
"Go," she says.
I go to Crane Street that night.
Not because I expect it to work. Because it's where I first read the signature, a year ago, and it's the geography of how I understand this, and I don't have another way to reach someone who doesn't have a number.
I stand at the alley mouth for twenty minutes.
Then I say, to the empty street and whatever's above it: "I need the buyer chain. The full registration, not the Cayman layer. Whatever you've found that the FBI hasn't reached yet."
The Narrows does what it does.
Then, from somewhere above and to my left:
"East End. Waterfront building, third floor. Tonight."
I go.
The building is old, close to the water, the specific smell of city infrastructure that's been here longer than anyone living in it. The third floor room has a door that opens on evidence I wasn't expecting.
Not files. A subject. A person who had been held here, operated on, and had not survived. Not one of our five. Someone else entirely, a parallel track we'd never found, whose disappearance had generated no report because there was no one to report it.
Batman is in the room.
We stand on opposite sides of what didn't survive.
"The buyer chain," I say.
He hands me a folded paper. Physical, not digital. Property records, registration documents, three layers past the Cayman entity to a name connected to a division of Wayne Enterprises and a consulting contract that traces to the modifications Dulmacher was performing. Specific enough to constitute evidence. Obtained in a way I can't disclose and will have to find another path to introduce.
"This is enough," I say.
"It should be."
I look at the person who didn't survive. "You found this."
"Yes."
"You've been building this case longer than I have."
A pause. "The legitimate way has a ceiling."
"I know where the ceiling is." I fold the paper. "I've been in this building for six years. I know exactly where it is." I look at him across the room. "I'm still going to try."
Something in the quality of the silence. Not agreement. The specific quality of someone who has already answered a question I'm still carrying.
I take the paper and go.
I get the address to Renee that night. I tell her where it came from without explaining the full path. She takes it. She works it for two days, building a legitimate chain of connection that she can put in a report, the way she builds everything: carefully, without a gap.
On the third day we go to the Narrows address.
The building is one I know: I've been past it a hundred times, on my route home, the kind of building that's been here longer than I've been alive and will be here longer than I will. Ground floor storage. Upper floors dark.
We go in with a team.
Dulmacher is at a workbench at the far wall, facing away from us. Not working. Sitting. The space is smaller than the others, less equipped, a temporary arrangement. A chair and a lamp and the files he carries with him and nothing that looks like a procedure space.
He hears the door and turns.
Late fifties, thin, with the hands of someone who has worked with precision for a long time. He looks at us with an expression that isn't surprise exactly. More like recognition.
"Detective," he says.
"Francis Dulmacher," Renee says. "You're under arrest."
She moves forward. He doesn't move. I move with her, slightly behind, watching his hands, watching the room.
Renee reaches him. Cuffs go on.
I'm beside him now. Close.
I reach out and my bare right hand closes around his wrist above Renee's cuff, skin contact, half a second.
What I get:
The procedure. Present and total, the way it is when something is a person's entire orientation. Not a mode they enter. A permanent condition.
The interest. Bright and specific, the texture of a craftsman thinking about work even now, even here.
The certainty. He believes the work is correct. The harm is the cost of something worth paying for.
And at the deepest layer, old and structural, the thing that made the certainty possible: he'd decided long ago that the people he chose didn't matter in the way mattering usually works. Not less than human. The right kind of resource for a purpose larger than them.
And then, beneath that, something I hadn't expected:
Pamela. Not an image. An awareness of her, the way you're aware of a calculation you've made. He knew who she was. He'd seen her near the sites. He'd made a decision about the drainage pipe and the maintenance report that the city would never act on and the convergence point of three contamination plumes where she took her readings.
He hadn't touched her with his hands.
He'd used the city's existing arrangement.
He knew exactly what he'd done.
I pull my hand back. Put the glove on.
Renee is completing the arrest. The team is working the room.
I look at the files on the workbench. I look at his hands, cuffed, resting on his thighs, the hands of someone who has worked with precision for a long time.
I don't say anything to him. There's nothing to say that would do anything useful.
I take out my notepad.
I write: he knew. deliberate. the city's arrangement.
I write: we have the case. it needs to hold.
I put the notepad away and go help Renee work the scene.