ARVADA - 9Wants to Know has learned details about the case against an engineering employee suspected of planting mercury inside his boss' telephone receiver after the suspect's twin brother was arrested in a separate but related case. Details of the case emerged in an arrest affidavit for the suspect's identical twin brother, who is charged with stalking the lead detective in the mercury probe. That same document also outlines how the hidden mercury could have been deadly. That arrest affidavit, obtained by the 9Wants to Know investigators, confirms that Philip Steel, of Deer Trail, is suspected of being behind an incident at his workplace, Dairy Engineering in Arvada on Jan. 8. Steel's supervisor reported that liquid mercury dripped from the receiver of his phone onto his face. He was not seriously injured. Steel's house was raided by authorities on Jan. 20. In the weeks following, Arvada detectives say Steel's twin, Justin Motzer, began stalking the lead investigator on the case. Motzer, a 45-year-old from Boulder who works as an investigator for an attorney, appeared in court on Tuesday. He is set to be arraigned on a felony charge of stalking next month. In the affidavit, police allege Motzer left a message for the detective in which he said "that his brother's name was being dragged through the mud" while the detective was "cozy" in his home. The message, according to authorities, made specific reference to the detective's neighborhood. The detective told colleagues ...