Where a police officer charges a person as an accessory after the fact without any evidence that the named principal offender committed the offence, and simultaneously suspects the accused of being the principal offender, the objective insufficiency of the material may itself support an inference that the officer could not honestly have believed there was a proper case for prosecution. A trial judge must consider the combined effect of the weakness of the material, the obvious insufficiency of the charge, and evidence of the officer's concurrent suspicion of the accused as the principal offender, rather than assessing each factor in isolation.
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