¡®Glee¡¯ star, Naya Rivera, is missing after taking a boat trip with her four-year-old son. Shortly before disappearing on Lake Piru near Los Angeles, California, she posted a photo of her and her son.

Officials said that the 33-year-old actress rented a boat on Wednesday afternoon at the lake, and later, police found her son alone on the boat. The boy had a life vest on, and an adult life vest was found on the boat, too. Police helicopters and divers are scouring the lake for any sign of the missing actress; however, officials presume that she has drowned.

Rivera is best known for a role in the TV show ¡®Glee¡¯ where she played a cheerleader named Santana Lopez for six years.

Difficult words: life vest (a special type of clothing that makes people stay above water), scour (to search something thoroughly), presume (to guess based on evidence), drown (to die from being underwater and unable to breathe).