After a car wreck you have no fault in, it is extremely important to contact an experienced car wreck attorney immediately.
The insurance companies often have people working for them immediately after an auto accident to ensure they can defend their insured driver (aka: the other person in your wreck). It is imperative you are in the same position to go up against those big insurance companies.
In cases where very serious injuries or death occurs, contact with an attorney is even more urgent. That way an attorney can ensure no evidence is lost and remains protected so justice can be brought to that case.