You've read all the parenting books and feel somewhat prepared to deal with the difficult questions your child may ask. But how on earth do you answer the question "why are the police taking Daddy away?". Cybershrink Prof Michael Simpson has some advice.
One would start with things they almost certainly already know, that there have been problems in the family involving their Dad, and ask them, early on, what they have noticed and overheard, and what they think might be going on. This phase is important, because (a) kids notice far more than we usually give them credit for, and (b) they tend, like adults, to fill the gaps between the bits they know, with fantasy about what might be happening. These ideas often being even worse than the truth. It's hard to correct their misconceptions until you know what these are.