The last exception, the so-called "catchall" rule, bears some explanation. This rule does not require that the declarant be unavailable to testify. It does say that evidence of a hearsay statement not included in one of the other exceptions may nevertheless be admitted if it meets these following conditions:

• It has sound guarantees of trustworthiness
• It is offered to help prove a material fact
• It is more probative than other equivalent and reasonably obtainable evidence
• Its admission would forward the cause of justice
• The other parties have been notified that it will be offered into evidence