TY - BOOK AU - Thompson,Kate TI - Fourth horseman SN - 0099495031 U1 - F THO /O 22 PY - 2007///, c2006 CY - London PB - RedFox KW - Animal experimentation KW - Juvenile fiction KW - Genetics KW - Research KW - Terrorism KW - Fiction KW - Spanish language materials KW - sears KW - Spanish language N1 - 5-8; 5-8; Follett Library Resources N2 - Laurie MacAllister, her brother Alex, and their friend Javed work to uncover the mystery behind some ghostly riders who seem to be connected to her father's work, a scientist who has accepted a job offer from a man who wants to find a virus that could put an end to gray squirrels ER -