I crossed to the balustrade and peered down, watching them glide slowly from the third floor to the second. The woman must have realized she was boxed in because the knuckles of her right hand were white where she clutched the rail. The sluggish speed of the moving staircase must have sent her heart into overdrive. The fight-or-flight instinct is almost irresistible and I marveled at her self-control. Her partner would be of no help to her now. If the younger woman intervened, she risked being caught in the same net.

Claudia was waiting on the second floor at the foot of the moving stairs. The shoplifter kept her attention fixed straight ahead, perhaps thinking if she couldn’t see her two trackers, they couldn’t see her. Once on the second floor, she took a hard turn and stepped onto the next down escalator. Claudia stepped on after she did, so that now there were two store employees in that slow-motion foot chase. The fact that the shoplifter was aware of them took away their home court advantage. By this time, however, the game was in progress and there was no way to abandon the pursuit. I could see a thin pie-shaped portion of the first-floor shoe department, which I knew was only a short stretch away from the automatic doors that opened onto the mall. I left the three of them to their own devices. By then, the older woman was no concern of mine. I was interested in her companion.

I crossed to the short corridor that led to the ladies’ lounge and pushed open the door. I was hoping she was still there, but she might well have slipped past me while I was watching her friend. To my right, an anteroom had been set aside for mothers with babies, affording them privacy to nurse, change stinky diapers, or collapse on a well-upholstered couch. That area was empty. Across from it, there was a room where sinks lined the two opposite mirrored walls, with the usual paper towel dispensers, hand blowers, and plastic-lined waste bins. An Asian woman foamed her hands with soap and rinsed them under running water, but she seemed to be the only customer present. I heard a toilet flush, and a moment later the younger woman opened the door to the second stall. She now sported a red beret and wore a white linen jacket over her navy blue dress. She still carried the shopping bag and her big leather purse. The only oddity I noted was a short horizontal scar between her lower lip and her chin, the sort of mark left when your teeth are driven through your lower lip on impact. The scar was old, with only a white line remaining to suggest a tumble from a swing or a fall against the corner of a coffee table, some childhood misfortune she’d carried with her since. She averted her face as she brushed by me. If she recognized me from the lingerie department, she gave no sign.

I kept my expression blank and headed for the stall she’d just vacated. It took me half a second to peer into the wall-mounted receptacle meant for used sanitary supplies. Six price tags had been clipped from articles of clothing and tossed into the bin. I listened to the sound of her retreating footsteps. The outer door closed. I scurried after her and opened the door a crack. I didn’t see her, but I knew she couldn’t have gone far. I proceeded to the mouth of the corridor and peered to my right. She stood in front of the bank of elevators, pushing the down button. Her head came up, as mine did, at the sound of a persistent high-pitched whoop from the ground floor. The older woman must have breached the transmitter-receiver system at the exit doors, where electronic surveillance tags had activated the alarm. Once she stepped outside, it would at least allow the loss-prevention officer to stop her and ask her to return.

The younger woman pressed the down button repeatedly as though to speed the arrival of the car. The elevator doors opened and two pregnant mothers emerged side by side, pushing strollers ahead of them. The younger woman pushed her way past them, and one turned to look at her with annoyance. Another shopper approached in haste and called out, not wanting the doors to close before she had a chance to get on. One of the pregnant women reached back and put a hand against the doors to stall their closure. The shopper smiled gratefully as she stepped in, murmuring her thanks. The elevator doors closed as the two pregnant women ambled off toward infant and children’s wear.

I made a beeline for the fire exit, laid one hip against the push-bar, and entered the stairwell. I went down as rapidly as possible, dropping two steps at a time while I calculated the younger woman’s escape alternatives. She could take the elevator as far as the second floor or the first, or proceed all the way down to the basement level, where the parking garage was located. If she realized I was on her tail, she might leave the elevator on 2 and take the escalator up to 3 again, in hopes of throwing me off course. On the other hand, she probably wanted to get out of the store as quickly as possible, which made the first floor the obvious choice. Once she slipped into the busy mall, she could doff the white linen jacket and the red beret and hurry away, knowing there was no chance I’d reach the exit doors before she’d been swallowed into the crowd. I reached the second-floor landing and used the railing as a pivot as I took the next flight down, muffled footsteps echoing as I ran. Another possibility occurred to me as I galloped down the stairs. If she’d arrived at the store with an eye to a leisurely day of thieving, she might have wanted her car handy, with a trunk capacious enough to accommodate multiple shopping bags stuffed with stolen goods. How many times had I seen shoppers dropping bags off at the car before returning to the mall?