I found a shop on Diversey that could help me. I stopped there on my way to the South Side. They rented me a wet suit. I bought a headlamp, goggles and an underwater knife; at a hardware store near Marc’s home I bought a roll of twine. That should get me through the pond if I had to go in.

I got to Marc’s house after the morning rush to work and school had ended. A stay-at-home mom out with a baby buggy eyed me curiously, but no one else was on the street. When Amy arrived, we started a deeper search than we’d done before, going through the basement, looking under rugs and tapping wallboard in the unfinished rooms-all the labor of a truly thorough search.

Around noon, Luke’s locksmith arrived. He had a box of keys and alarm codes. When he had opened the Saturn, he gave me the coded key that worked the ignition and alarm-for a hundred dollars.

While Amy continued doggedly inside the house, I made a similarly thorough, and equally futile, search of the car. I was lying under the chassis with a flashlight, while a couple of area winos offered helpful suggestions, when Renee Bayard returned my call.

I slid out from beneath the car and got into the driver’s seat so I could talk to her privately. The Wabash Cannonball came over the ether at full speed.

“Ms. Warshawski, you were talking to my granddaughter on Wednesday without my permission. You were out in New Solway yesterday questioning my staff without talking to me first. And now, finally as an afterthought, you want to talk to me. You should have started with me.”

My hand grew wet on my little phone. “I thought Catherine told you why we were talking.”

“Give me some credit, Ms. Warshawski: I didn’t just climb down from a tree and start walking erect. I’ve spoken to Darraugh Graham. Besides assuring me Catherine never asked him for the name of a detective, he says he told you to end the inquiry that took you to New Solway to begin with.”

“He’s not my only client, Ms. Bayard. I’m investigating Marcus Whitby’s death. Mr. Whitby died in New Solway and-“

“And has no connection with my husband or granddaughter that I can discern.”

“And has a definite connection with Olin Taverner, who also died this week in odd circumstances.” Annoyance stiffened my attitude. “Mr. Whitby met with Taverner shortly before his death. Taverner showed him his secret files, which are now missing. I’m assuming their mutual interest was Kylie Ballantine; I was hoping you knew what Taverner’s involvement was with Ballantine.”

“And I’m supposed to be your research file? Because we published one of Ballantine’s books?”

“Because you met Mr. Bayard during the HUAC hearings and you might remember whether Kylie Ballantine was also a target of Olin Taverner’s.” She paused for a moment, as if deciding whether I deserved an answer, before saying, “There used to be something called the Committee for Social Thought and justice, a kind of left-wing think tank. Olin always wanted them to be a Communist front. Ballantine might have taken part in some of their meetings, I don’t know. If she did, Olin might have questioned her privately, but I wouldn’t know. What were the odd circumstances of Olin’s death?”