1st try; answer phone, get attacked by succubus, Kliene is asleep, she shifts in her seat a few times, then kills him. Game over.
2nd try: answer phone, talk to Oz, both get attacked by succubus, ATB incentivises spamming attack ASAP, eventually defeat her. Talk to everyone outside (between random encounters) until I give Paul water, then the game fades to black, but based on still being able to talk to people (if I can find them) and access menu, game still appears to be running. Get a couple of random encounters but still black screen after.
3rd try: go straight to Paul. Same issue.
I have to admit I only tried episode one, but given I wasn't sure what was going on on who anyone was anyway, didn't seem advisable to skip ahead, plot-wise.