Okitegami Kyouko no Ryokouki

The eighth instalment of the Boukyaku Tantei Series.

"I'll snatch the Eiffel Tower." --Miss Phantom Thief.
The forgetful detective, Okitegami Kyouko, is invited to Paris to stop a daring crime threat. However, the thief's true plan is to have Kyouko-san herself steal the Eiffel Tower......?! Stolen memories and a brilliant trap. Can her assistant, Kakushidate Yakusuke, save Kyouko-san from the thief's clutches?

(Source: Kodansha, translated)