Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_18952 ( "Ep. No." real, "Title" text, "Director" text, "Written by" text, "Original Air Date" text, "Production No." real )

### Question ###
What is the production number of 'rain of terror'?

### Accurate SQL ###

SELECT MIN("Production No.") FROM table_18952 WHERE "Title" = 'Rain of Terror'