The W Search/Two Detectives in One

is the first episode of Kamen Rider W.
==Synopsis==
Akiko Narumi arrives in Futo to be the landlord of the "hard-boiled" detective Shotaro Hidari, who finds himself involved in a case involving a former female love and a Dopant on the attack.
==Plot==
In the city of Futo, detective Shotaro Hidari has an unpleasant visit from his new boss Akiko Narumi, who has just arrived after learning that her father has gone missing one year ago. As Shotaro learns of the girl's relation to his mentor and boss, hiding what became of him, his childhood friend Marina Tsumura arrives in need of his help in finding her boyfriend Yousuke Togawa. Taking the case, with Akiko tailing him against his will, Shotaro learns from his best friend Police Senior Detective Mikio Jinno that the Windscale building Yousuke worked at has been destroyed by a fiery Dopant. Akiko's initial curiosity turns into terror when she and Shotaro are attacked by the Magma Dopant. Later that night, staying in spite of being told to leave and dead set on evicting Shotaro, Akiko ends up stumbling onto a secret room where she meets Shotaro's partner Philip, before she unintentionally has him focus on instead of the Dopant.
As Shotaro explains the Dopants to be humans to become monsters through Gaia Memories, Philip finally finishes his search on takoyaki resumes his research as he accesses the Gaia Library to put the pieces together before Shotaro heads out. Shotaro finds Yousuke, approaching him to have him return to Marina. However, thinking he works for Windscale, Yousuke transforms into the Magma Dopant to attack Shotaro. He calls Philip, who uses the Cyclone Memory in his own belt, which travels with his soul to Shotaro's Doubledriver, allowing him to transform into Kamen Rider Double.
He battles the Magma Dopant as CycloneJoker before changing into LunaJoker to use his limb-stretching powers to overpower the Dopant. Double then changes back into CycloneJoker to execute the Joker Extreme, destroying the Magma Memory and returning Yousuke back to normal. However, before he can do anything else, Yousuke is taken by the T-Rex Dopant. Double summons the Revolgarry with Akiko and Philip's body inside.
==Gaia Memories==
*Memory Used
**Soul - Cyclone, Luna
**Body - Joker
*Half Changes:
**CycloneJoker, LunaJoker
==Cast==
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===Guest Stars===
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*: YOH
==Error==
*When Double CycloneJoker insert the Joker Memory into the Maximum Slot, the sound played after the announcement was from the right side Memory (Cyclone, Heat and Luna) instead of Joker Memory itself.
==Notes==
*As part of Super Hero Time, this episode aired alongside episode 28, .
*Viewership: 10.2% 
*It is the first part of the 'W' arc, W standing for (Kamen Rider) W, Windscale and Word.
*The episode begins with a cold opening, which depicts the origins of Double. The full backstory of that night would eventually be shown in Kamen Rider × Kamen Rider W & Decade: Movie War 2010. 
==External links==
*TV Asahi's official summary for ｢Ｗの検索／探偵は二人で一人｣
*Toei TV's official episode guide for ｢Ｗの検索／探偵は二人で一人｣
==DVD/Blu-ray releases==
*Kamen Rider W Volume 1 features episodes 1-4: The W Search/Two Detectives in One, The W Search/Those Who Make the City Cry, Don't Touch the M/How to Get to Heaven and Don't Touch the M/Play with a Joker.
*Kamen Rider W Blu-ray Box 1 comes with 16 episodes.
Kamen Rider W Volume 1.jpg|Kamen Rider W Volume 1, DVD cover
BSTD08745-d.jpg|Kamen Rider W Box 1, Blu-ray cover
Category:Kamen Rider W
Category:Episodes
Category:Season Premieres