Originally published in English by Candlewick Press in 2007 under title: Mercy Watson : princess in disguise.
Summary:
Persuaded by the word "treating" to dress up as a princess for Halloween, Mercy the pig's trick-or-treat outing has some very unexpected results. El Sr. y Sra. Watson tienen una cerda llamada Mercy: una verdadera maravilla porcina. Como se acerca la noche de Halloween, los Tatson ya tienen pensado el disfraz perfecto para Mercy. Para convercerla de que se ponga el traje, le prometen que los vecinos le dar�an algo delicioso. �Qu�e puede ser m�as divertido que la aventura de ir a pedir golosinas? En especial, cuando hay una persecuci�on en el medio de todo... -- Provided by publisher.
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