Extrinsic evidence

Question 1

Common law rule/Hitchcock rule

Answer 1

extrinsic evidence is not allowed if it pertains to a collateral matter.

Question 2

Collateral matter

Answer 2

means outside information or not really essential to what was going on or central to the case.

Bias is never a collateral matter.

Question 3

If evidence is offered for two reasons: 1) Bias and 2) character

Answer 3

it will only come in to prove bias.