It would go like this:i)
Your opponent commits attackers.ii)
You commit defenders, including Sieur Piriou Louis (SPL).iii)
Having now committed SPL, you can trigger his Response - and must do so now, before the next Action is played or the next framework action occurs of resolving stories, or else the opportunity to do so is lost.iv)
Upon triggering SPL's Response, all other characters at the same story that can go insane do go insane, then he receives a success token (and if this is his third success token then, being Fated 3, SPL would then return to the bottom of your deck).v)
Forced Responses happen when they say they will, and take precedence over any Responses that are equally applicable (noting that during story resolution you cannot trigger Responses or subsequently Actions until all stories have resolved, though Forced Responses still occur), so if Richard Pike was sent insane by SPL then his ability would now trigger, giving Willpower and Toughness to any other Miskatonic characters (yours and your opponents) that weren't also sent insane by SPL at the same time as Richard.
Note that insane characters lose their faction (i.e. have no faction) and their text box cannot be modified, so Richard Pike's effect - in addition to coming too late to save any others from SPL - cannot be applied to formerly-Miskatonic characters that have since gone insane. (In other words, Richard Pike can't actually give anyone Willpower in time for it to be useful, when facing SPL.)vi)
After all stories have resolved there is now an opportunity to trigger Responses to things that occurred during story resolution. With SPL's Response resolved, Richard Pike going insane as a result and his Forced Response also dealt with, now Catacombs Docent could trigger his Response - but only* if: a) he isn't currently insane as a result of SPL; and b) he hasn't gained Willpower from Richard Pike (or a Terror icon from some other source) that would prevent him from going insane as a cost to use his ability - in which case you could now drive Catacombs Docent insane to place a success token at a story with three or fewer success tokens on your side.vii)
Here, other Responses could be triggered, if any; followed by Actions, if any; then the turn would end.
* Note: If Catacombs Docent was attacking a story defended by SPL, the only way I can think of to be able to use his ability (regardless of whether Richard Pike was also around) would be with Mu. Catacombs Docent would be driven insane by SPL, all stories would resolve, then during the window for Responses you could trigger Mu to restore Catacombs Docent, and then Catacombs Docent could next trigger his own Response during the same Responses window to having been driven insane. (Cards with Action abilities like Arkham Asylum would not work, because the Action window occurs after the story Responses window has closed, and Catacombs Docent would not be restored in time.)
To better understand why things happen in this order, I highly recommend reading HilariousPete's articles:
- Timing in Call of Cthulhu LCG. Part 1 – Basic Introduction
- Timing in Call of Cthulhu LCG. Part 2 – Triggered effects
in conjunction with the Detailed Turn Sequence diagram in the Core rules and the Timing Structure section in the FAQ.
Referencing The Action Window in Detail part of the FAQ, what we have here is:1) Action/Response is initiated -
SPL triggers his Response2) Disrupts -
none in this example3) Action/Response is executed -
all other characters at SPL's story that can go insane do go insane4) Passive abilities are initiated -
none in this example5) Forced Responses -
Richard Pike triggers his Forced Response, which goes through the same steps 1) to 4)6) Responses (after all stories resolve if during the Story Phase) -
Catacombs Docent triggers his Response, which goes through the same steps 1) to 4)
Edited by jasonconlon, 27 October 2014 - 12:10 AM.