shall not sentence the person convicted to death but shall order him or her to be detained in safe custody; and section 105 of the Trial on Indictments Act shall apply as if the order had been made under that section. (4) The fact that one party to a murder is by virtue of this section not liable to be sentenced to death shall not affect the question whether any other party to it shall be sentenced to death. 195. Suicide pacts. (1) It shall be manslaughter and shall not be murder for a person acting in pursuance of a suicide pact between him or her and another to kill the other or be a party to the other killing himself or herself or being killed by a third person. (2) Where it is shown that a person charged with the murder of another killed the other or was a party to the other’s killing himself or herself or being killed, it shall be for the defence to prove that the person charged was acting in pursuance of a suicide pact between him or her and the other. (3) For the purposes of this section, “suicide pact” means a common agreement between two or more persons having for its object the death of all of them, whether or not each is to take his or her own life, but nothing done by a person who enters into a suicide pact shall be treated as done by him or her in pursuance of the pact unless it is done while he or she has the settled intention of dying in pursuance of the pact. 196. Causing death defined. A person is deemed to have caused the death of another person although his or her act is not the immediate or sole cause of death in any of the following cases— (a) if he or she inflicts bodily injury on another person in consequence of which that person undergoes surgical or medical treatment which causes death. In this case it is immaterial whether the treatment was proper or mistaken, if it was employed in good faith and with common knowledge and skill; but the person inflicting the injury is not deemed to have caused the death if the treatment which was its immediate cause was not employed in good faith or was so employed without common knowledge or skill;