The Secret is the second extended play by South Korean-Chinese girl group Cosmic Girls. It marked their first album as a thirteen-member group since the addition of Yoo Yeon-jung in July 2016. It was released on August 17, 2016 by Starship Entertainment and distributed by LOEN Entertainment. To promote the EP, the group appeared on several South Korean music programs, including Music Bank and Inkigayo. The song "Secret" was released as the lead single from the EP with a Chinese version also included.

The EP was a commercial success peaking at number six on Gaon Album Chart. It has sold over 14,939 physical copies as of September 2016.

The Secret was released digitally on August 17, 2016 through several music portals, including iTunes for the global market. Two days later, on August 19, a physical album was released.

On August 17, Cosmic Girls held a showcase to celebrate the album release, performing for the first time the new songs, alongside past singles.

On August 18, the group held their first comeback stage on Mnet's M Countdown performing "BeBe" and "Secret". It was followed by KBS's Music Bank on August 19 and SBS's Inkigayo on August 21.

The Secret entered at number 7 on the Gaon Album Chart on the chart issue dated August 14–20, 2016. In its third week, the album climb back to the Top 10 at number 6, achieving a new peak.

The mini-album entered at number 15 on the Gaon Album Chart for the month of August 2016 with 8,629 physical copies sold. A month later, the mini-album peaked at number 14 for the month of September 2016 with 6,310 physical copies sold. It has sold over 14,939 copies.

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Wikipedia