Preview from abc.com:

During a surprise ‘mystery date,’ Byron discovers that two more women are throwing their hats into the ring for his affections, as two of The Bachelor’s past “”All-Stars”” return for a second chance at love. Meanwhile back at the house, the women are shocked — and many are furious — to discover that they now have added competition. Then, once again, he’ll select three women for his dramatic “”Last Chance Talks.”” Who will get the roses? Do either of the “”All-Stars”” have a chance at winning his heart?