Porthos (Howard Charles) wakes up from his drunken birthday celebrations with no memory of the night before; not unusual, except there’s a dead body beside him… After being unjustly sentenced to death he’s abducted to the dangerous Court of Miracles, the streets of his childhood.

In order to save him, the Musketeers must prove his innocence. Their investigations uncover a tangled web of divided loyalties and greed and they risk their lives to infiltrate the unruly slums of the Court of Miracles before it is too late.

Ashley Walters guest stars as Charon; Anton Lesser is Émilie De Mauvoisin and Fiona Glascott is Flea.

The Musketeers episode 5 airs on BBC One on 23 February at 9pm.

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(C) BBC / Larry Horricks