What's Wrong With My Statement? (simple)

Hello well-intentionned reader,

I'm having trouble figuring out what's wrong with my statement. This is what the table looks like. I want to display employees under the manager with the last name King. my statements are below the tableName Null? Type
----------------------------------------- -------- ----------------------------
EMPLOYEE_ID NOT NULL NUMBER(6)
LAST_NAME NOT NULL VARCHAR2(25)
SALARY NUMBER(8,2)
MANAGER_ID NUMBER(6)


My statement
SQL> SELECT last_name, salary
FROM employees
WHERE manager_id =
(SELECT employee_id
FROM employees
WHERE EMPLOYEE.LAST_NAME = .King.); 2 3 4 5 6
WHERE EMPLOYEE.LAST_NAME = .King.)
*
ERROR at line 6:
ORA-00936: missing expression


Thank you for your time.

/gozu