A dentist on trial for poisoning his wife. And detectives' doubts about the case of a Virginia dad accused of conspiring with his au pair.

In Colorado, security video takes center stage at the murder trial of dentist James Craig. In the D.C. suburbs, a dramatic pre-trial hearing in the case of Brendan Banfield, accused of plotting to kill his wife and a stranger with the help of the family au pair. And verdicts for both former MLB player Dan Serafini and Iowa farmer's widow Karina Cooper. Plus, a former secret service agent on a scam involving fake cops.

Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

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