As Colter helps a young woman locate her free-spirited sister, he digs deeper into how her last days may lead to a dark secret she unearthed in this tight-knit town.
A shuttle accident leads to Spock's Vulcan DNA getting removed by aliens, making him fully human and unprepared to face T'Pring's family during an important ceremonial dinner.
A plan to identify the members of Oversight goes awry when Sean captures Birkoff; Alex tries to get back into Russia.