Sarah Hayward

After receiving a cryptic warning from Lancelot about Arthur's intentions, Mary Margaret realizes Arthur may be the heroes' biggest threat, but when she is unable to convince David of the danger, she takes matters into her own hands. Meanwhile, Hook's unwavering love for Emma provides a glimmer of hope in her struggle against the unrelenting voice of Rumplestiltskin.

When Todd reunites with a childhood friend with a checkered past, he convinces Margaret to represent him in a minor legal case.

A cloaked stranger who carves Kryptonian symbols into his chest -- a message for Clark -- attacks Lex. Chloe and Clark investigate and discover one member of the Veritas clan has survived and is hiding in a church. Clark and Lex race to be the first to find this mysterious Veritas member, who holds the key to Clark's survival.

Alice concocts a plan to find out who she is up against; Jafar and the Red Queen have a confrontation; a flashback reveals how Alice and Cyrus fell in love.

Abraham and Dariela reunite with the team as they try and stop the hybrids from taking over New York City.