Colorado dentist, 45, is charged with poisoning his wife to death in 'complex and calculated' plot 

(March 21 01:27) Dailymail.co.uk

A Colorado dentist was arrested Sunday for the fatal poisoning of his wife of 20 years with whom he shared six children.

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Colorado dentist, 45, is charged with poisoning his wife to death in 'complex and calculated' plot&nbsp;