Question: Who wrote the episode with the production code of 3T7255?
SQL: SELECT "Written by" FROM "1-27116696-1" WHERE "Production code" = '3T7255';

Question: How many U.S. viewers (million) watched the episode directed by Allison Liddi-Brown?
SQL: SELECT "U.S. viewers (million)" FROM "1-27116696-1" WHERE "Directed by" = 'Allison Liddi-Brown';

Question: What is the total number of production code listings of episodes written by Matthew Lau?
SQL: SELECT COUNT("Production code") FROM "1-27116696-1" WHERE "Written by" = 'Matthew Lau';