Thanks to TVBuff65 for the heads up.
“Due to a medical emergency involving a performer in a recurring role on season 2 of Westworld, filming on one of the two units has been temporarily suspended,” HBO said in a statement to Deadline. “The cast member was not on set when this occurred, and out of respect for the performer’s privacy, we have no additional details to share, other than that everyone at Westworld sincerely hopes for a quick recovery.”
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