The Killer Mystery Trilogy is a three part mini series within the The Hardy Boys Undercover Brothers series. The first book in the series, Killer Mission, was published in November 2009. Book two, Private Killer, was published in January 2010, and book three, Killer Connections, was published in March 2010.
to be added.
|The Hardy Boys Trilogies|
|Bayport Corruption • Operation Phoenix • Ring of Evil • Murder House • Double Danger • Galaxy X • Killer Mystery • Lost Mystery|
|Bayport Corruption titles||See No Evil • Line of Fire • Beyond the Law|
|Operation Phoenix titles||Endangered Species • No Mercy • The Phoenix Equation|
|Ring of Evil titles||Tagged for Terror • Survival Run • The Pacific Conspiracy|
|Murder House titles||Deprivation House • House Arrest • Murder House|
|Double Danger titles||Double Trouble • Double Down • Double Deception|
|Galaxy X titles||Galaxy X • X-plosion • The X-Factor|
|Killer Mystery titles||Killer Mission • Private Killer • Killer Connections|
|Lost Mystery titles||Children of the Lost • Lost Brother • TBA|