Please answer the following questions in detail and provide reference if used

1.  Discuss the purpose of bail.  This well-written answer needs to include a discussion of the Eighth Amendment.

2.  Describe the difference between a lay and expert witness.

3.  What is the difference between direct and circumstantial evidence.

4.  If a defendant is found not guilty of a murder, can he be retried if he confesses to the act after the trial and produces the murder weapon from it’s hiding place?  Explain.

5.  What is the purpose of voir dire.