A beast has been unleashed.

This week in Genoa City, Jack sets out to make those who let him down pay, and some think he’s out of control. Neil and Devon have to intervene when Jack confronts Billy about sleeping with Phyllis.

Find out what happens on Monday’s episode through Soaps.com’s Y&R day ahead recap. Read Soaps.com’s Y&R spoilers to find out who will need Mariah’s help.

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Photo credit: Howard Wise/JPI

– Candace Young