Habeas Corpus, and Its Place in Human Rights Enforcement

In one line

Habeas corpus requires the person detaining another to produce the detainee and justify the detention, and it is the oldest, fastest and most important remedy in this module.

What it does

Have the body. The direction is to produce the person before the court and to state the authority for the detention.

Three features distinguish it from every other writ.

It lies against a private person. Detention by a husband, a family, an institution or an employer is within it, so it is the only writ that operates horizontally.

Anyone may move it. The detainee, a relative, a friend, a lawyer, an organisation or a stranger acting bona fide, because a person in detention cannot file for themselves. The relaxation of standing that Module II describes was, for this writ, always the rule.

And the burden lies on the detaining authority. The petitioner need only show detention; the respondent must justify it. That reversal is what makes the writ effective, because the facts are in the respondent's possession.

When it lies

Detention without any legal authority at all.

Detention under an authority that is invalid, whether because the statute is unconstitutional or the order is beyond power.

Detention where the prescribed procedure was not followed, which after Module II means a procedure that is right, just and fair.

Detention continuing after the authority has expired, as where a person is held after acquittal, after the sentence has been served or after bail has been granted.

And detention in conditions so far outside what the law permits that it ceases to be the detention authorised, which is where the prisoners' rights cases connect.

Its procedure

It is heard urgently, ahead of other matters.

A rule nisi issues calling on the respondent to show cause, and the return states the authority.

The court examines the return rather than requiring the petitioner to prove illegality.

Technicalities are relaxed. A defective petition, an error in the description of the respondent or an informal communication will not defeat it, and the epistolary jurisdiction described in [The Epistolary Jurisdiction] began substantially with detention cases.

The two limitations

These are what a good answer adds, because the writ is otherwise presented as unqualified.

Legality is judged at the time of the return. If the detention was unlawful when it began and a valid order has since been made, the writ will not issue, because the person is now lawfully held. The remedy for the earlier illegality is compensation, not release, which is one reason [Compensation in Public Law] developed.

And it tests the legality of the detention, not the merits of the underlying decision. In preventive detention the court examines whether the grounds were communicated, whether the representation was considered, whether the Advisory Board procedure was followed and whether the order is beyond power. It does not substitute its own view of whether the person is dangerous.