Secret Summer is the fifth mini-album by South Korean girl group Secret. The album was released on August 11, 2014, and contains six tracks. The album came in 2 versions, one pink and one blue. This is the final Secret album featuring member Han Sunhwa.

The lead single, "I'm in Love", was released on August 11, 2014. The official music video was unveiled on the same day. The song was written and produced by Duble Sidekick, and marked a return to their sexy and powerful inspired songs such as "Magic", "Madonna", "Love Is Move" and "Poison".

Secret promoted "I'm in Love" as well as "U R Fired" and "Could Do Better" on music shows in August 2014 on KBS's Music Bank, MBC's Show! Music Core, SBS's Inkigayo and Mnet's M! Countdown. They also held a MelOn showcase on the day of album release.

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