|The Secret of The Cursed Letter|
|Romaji||Noroi no Tegami no Himitsu|
|Type||Event Case - Mystery Solving Event|
|Case Number||Mystery Solving Event Case 1|
|Start Date||5 July 2017 - 11 October 2017|
|Website||Black Label Rush|
The Secret of The Cursed Letter is the event for 25th Commemoration Anniversary of Kindaichi Case Files R. Collaboration Seimaru Amagi and Fumiya Sato with Tokyo Metropolitan Bureau of Transportation & Keio Corporation. This event open for free.