Spring-Heeled Jack

Spring-Heeled Jack is a female deinonychus who travelled through an Anomaly to 1860s London and committed several killings. Later, she travelled through another Anomaly to 2010 and was moved into the ARC Menagerie.

Biography
At some point in the late 1860s, Spring-Heeled Jack travelled through an Anomaly from the Cretaceous to London. In 1868, she had made home in an old warehouse and killed three people, with no witnesses or evidence of a dinosaur behind the attacks. In her warehouse, an Anomaly to 28 February 2010 opened and Spring-Heeled Jack passes through to an Art Museum in London. The Anomaly Research Centre team encountered her, and Hilary Becker forced her back through. When they found out the Anomaly led to 1868, team leader Matt went through and found Spring-Heeled Jack in the warehouse, but the dinosaur fled, killing a stagecoach driver. Matt and woman Emily Merchant chased Spring-Heeled Jack to the Anomaly, where Becker knocked it out. She woke up just in time to kill Henry Merchant, Emily's husband, then she was knocked out again.
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By March 2010, Spring-Heeled Jack was moved to the ARC Menagerie.

Spring-Heeled Jack ended up killing 12 people, and a woman Emily Merchant (aware of anomalies), who had dressed in a cloak and stood by Spring-Heeled Jack's victims to make sure people didn't think a dinosaur had killed people, was locked in an asylum after telling her husband of her adventures. It is unknown what happened to her.
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