Mafia 87. At the Dawn of War

1) When protecting someone, does Jacob Bobrowski permanently lose a portion of his defense, or only for one night? 2) Do demons summoned by a Warlock live and remain active as long as the Warlock is alive? 3) Does the Deathbringer provide an additional clue himself, or is it given by the Game Master? 4) What happens to a maniac's karma if their Night Deed fails for some reason (due to a block, for example) or is unsuccessful (e.g., the murder fails due to defense)? 5) If karma exceeds the permissible limits, does the maniac die immediately or at the end of the night? For example, can he commit a murder in the first night (karma becomes -4), and then perform an Uplift (karma returns to -1)?