Provide the customers' names who ordered the Fantasmas.
"Fantasmas" is the title of the book; customer names refers to first_name, last_name
SELECT T4.first_name, T4.last_name FROM book AS T1 INNER JOIN order_line AS T2 ON T1.book_id = T2.book_id INNER JOIN cust_order AS T3 ON T3.order_id = T2.order_id INNER JOIN customer AS T4 ON T4.customer_id = T3.customer_id WHERE T1.title = 'Fantasmas'