Bending down, Colleen began sloshing the sudsy water onto the mareâs legs. âFortunately, one application of a blister doesnât really hurt a horse. And whoever put it on didnât use much. It probably made Nightingaleâs skin tender, so she didnât want to bend her pastern.â
âUh, I donât want to sound too dumb,â Bess said hesitantly. âBut whatâs a pastern?â
Colleen pointed to what looked like the horseâs ankle. âItâs between the hoof and the fetlock.â Colleen stood up, and Nancy caught a whiff of the strong scent of the blister.
âThe blister will wear off overnight,â Colleen said with a sigh. âBut this makes three days in a row I havenât worked Nightingale. And she needs to be in super shape if sheâs going to do well at the show.â
âWhat exactly is a blister and where could someone get it?â Nancy asked.
âA blister is a counterirritant that you rub on ahorseâs leg. Itâs supposed to make sprains and pulled tendons heal faster.â
âHuh?â Bess looked confused. âHow can making a horseâs leg sore help it heal?â
âWhen the blister burns the area, it supposedly speeds up the flow of blood to the leg, which promotes healing. Itâs used a lot on racehorses. Most people who show horses donât use it, because it can peel off the hair.â
âDo you keep a bottle in your tack room?â Nancy asked.
Colleen nodded. âIn the medicine chest. I havenât used it in ages.â
Nancy handed Bess the lead line. Inside the tack room she found the medicine chest mounted on the wall. Opening the door, she read the various labels. Finally she found the blister tucked behind a box of cotton. When she pulled out the bottle, she checked for signs that it had recently been opened. But there was no telltale scent of the strong-smelling liquid, and the top was screwed on tightly.
âWhoever put the blister on Nightingale didnât get it from your medicine chest,â Nancy said when she rejoined her friends, who were standing outside in the driveway. Colleen was hosing off Nightingaleâs legs.
âThat doesnât mean anything. You can buy blister at any tack shop,â Colleen said.
âStill, only someone familiar with horses would know about it.â
Colleen snorted. âThatâs just about everyone I know.â
âCould someone youâre competing against in the International have done this?â Nancy asked.
âMaybe,â Colleen replied with a shrug. âBut theyâd be taking a big risk for nothing. I mean, the blister wonât keep me from showing.â
âTrue.â Nancy fell silent as Colleen wiped down her horseâs legs. Who could have sneaked in and put the blister on Nightingale? It had to have been someone who knew about the Healeysâ alarm system.
âColleen, what time did you and Phil come in last night?â Nancy asked.
Colleen stood up. âAbout midnight, I think.â
âAnd was the driveway alarm on?â
âYes. My dad said it woke him up when we came home.â
âHmmm.â Nancy began to pace the gravel drive. âSo the person who did this had to know how to avoid the alarm system.â Abruptly she halted in front of Colleen. âDid you hear Philâs car leave after he brought you home?â
âSure. He came in for coffee and then . . .â Suddenly Colleenâs eyes narrowed, and she gave Nancy a suspicious look. âAre you trying to pin this thing on Phil?â
âNo. But he is a suspect. Everyone is,â Nancy added quickly. She knew how mad people got when someone close to them was accused of wrongdoing.
âWell, forget it,â Colleen said firmly. âPhil might be jealous of the time I spend with Nightingale, but heâd never do anything to hurt her. He knows how much she means to